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Infiniti · Midsize Sedan

2018 Infiniti Q50

Hybrid Gas

Midsize Cars
8 EPA-rated configurations
Data refreshed 2026-10-26

Safety Signal

83 / 100 from the NHTSA recall record

RecallsNHTSA campaigns 3

Complaints1 crash · 1 fire reported 44

Crash ratingnot rated by NHTSA —

Fuel economybest combined, EPA 29 mpg

2024 2023 2022 2021 2020 2019 2018 2017 2016

The 2018 Infiniti Q50 is sold in the U.S. as a hybrid and gas midsize sedan with 8 EPA-rated configurations. The most efficient version, the Q50 Hybrid, is EPA-rated at 29 mpg combined. NHTSA lists 3 recall campaigns for this model year, which gives it a Safety Signal grade of B. Owners have filed 44 complaints, most often about the engine.

Infiniti Q50 — photograph via Wikimedia Commons — Infiniti Q50 · Photo: M 93 · CC BY-SA 3.0 de · Wikimedia Commons

Specs & fuel economy

Source: EPA fueleconomy.gov

Configuration	Powertrain	Drive	Engine / motor	City	Hwy	Comb	Annual fuel*
Q50 Hybrid	Hybrid	RWD	3.5L 6-cyl + 346V Li-Ion	27	32	29	$2,850
Q50 Hybrid AWD	Hybrid	AWD	3.5L 6-cyl + 346V Li-Ion	26	30	28	$2,950
Q50	Gas	RWD	2.0L 4-cyl turbo	23	30	25	$3,300
Q50 AWD	Gas	AWD	2.0L 4-cyl turbo	22	28	24	$3,400
Q50	Gas	RWD	3.0L 6-cyl turbo	20	29	23	$3,550
Q50 AWD	Gas	AWD	3.0L 6-cyl turbo	19	27	22	$3,750
Q50 Red Sport	Gas	RWD	3.0L 6-cyl turbo	20	26	22	$3,750
Q50 Red Sport AWD	Gas	AWD	3.0L 6-cyl turbo	19	26	22	$3,750

*EPA estimate at 15,000 miles/year at EPA reference fuel and electricity prices. fueleconomy.gov record ids: 39147, 39148, 38931, 38932, 38927, 38928, 38929, 38930.

Emissions & certification

Source: EPA emission certificates

Configuration	Smog rating	Emission standard	Where it can be sold new	SmartWay
Q50, Q50 AWD, Q50 Hybrid, Q50 Hybrid AWD	3 / 10	California LEV-II ULEV / Federal Tier 3 Bin 125	All 50 states (federal, all altitudes); California and states following California standards	—
Q50	3 / 10	California LEV-III ULEV125 / Federal Tier 3 Bin 125	All 50 states (federal, all altitudes); California and states following California standards	—
Q50 AWD	3 / 10	Federal Tier 3 Bin 125 / California LEV-III ULEV125	All 50 states (federal, all altitudes); California and states following California standards	—
Q50 Red Sport, Q50 Red Sport AWD	3 / 10	Federal Tier 3 Bin 125 / California LEV-II ULEV	All 50 states (federal, all altitudes); California and states following California standards	—

Certified for all fifty states, so it can be registered new anywhere in the U.S.

The smog rating scores tailpipe pollutants other than greenhouse gases, 1 (worst) to 10 (best), and is comparable only within a model year. The standard is the federal bin or California tier the configuration was certified to. Both come from the EPA certificate behind the window sticker.

Specifications filed with NHTSA

Source: NHTSA vPIC

Dimensions Exterior

Body style	Sedan/Saloon
Doors	4
GVWR class	Class 1: 6,000 lb or less (2,722 kg or less)

Engine Basics

Cylinders	4
Displacement	2 L
Engine configuration	In-Line

Engine Output

Horsepower

208 hp

Fuel Economy

Fuel	Gasoline

Transmission

Drivetrain

4x2

Filed by the manufacturer with NHTSA under the federal vehicle-identification rule and decoded from the VIN pattern — not a manufacturer press kit, so it describes the configurations we could identify rather than every trim. Figures for the trim you are looking at may differ.

Dimensions & weight

Source: Transport Canada

Length	189.0 in
Width (body, without mirrors)	71.7 in
Height	57.5 in
Wheelbase	112.2 in
Track, front	60.6 in
Track, rear	62.6 in
Curb weight	3,845–4,213 lb
Weight distribution, front/rear	55/45 to 57/43

Measured by Transport Canada for its Canadian Vehicle Specifications database, which covers the North American versions of each model — here 4 configurations: 4-door Sedan 2.0 AWD, 4-door Sedan 3.0 AWD, 4-door Sedan Redsport 400 AWD, Hybrid AWD 4-door Sedan. Where a range is shown, those versions differ. Width is the body without mirrors, which is why it can read narrower than a brochure figure. Before we used it we checked it against the US manufacturer press kits we hold (27 Sep 2026): wheelbase agreed within 1% on every vehicle we could compare, length on 98%, and the curb weight fell inside the manufacturer's range on 96%. Source dataset. Contains information licensed under the Open Government Licence – Canada. Licence.

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Recalls (3)

Source: NHTSA recall database

▲high

Power Train

R24A5, R24A7

7,222 vehicles 39% reported repaired built Dec 10, 2012 – Jun 25, 2018

Problem Nissan North America, Inc. (INFINITI) is recalling certain 2011-2013 M56, 2012-2013 M35 Hybrid, 2014-2018 Q50, Q70 Hybrid, 2014-2019 Q70, and 2015-2019 Q70L two-wheel drive vehicles. The driveshaft can fatigue and break. Risk A broken driveshaft can result in a loss of drive power, or a vehicle roll away when the vehicle is in park without the parking brake applied. Both scenarios can increase the risk of a crash. Fix Dealers will replace the driveshaft, free of charge. Owner notification letters were mailed August 13, 2024. Owners may contact INFINITI's customer service at 1-800-662-6200. INFINITI's numbers for this recall are R24A5 and R24A7.

Filed with NHTSADefect report PDF Owner letter PDF Remedy instructions PDF

NHTSA campaign 24V470000 reported Jun 21, 2024 Nissan North America, Inc. the full filing, and every vehicle covered →

○minor

Back Over Prevention

1,228,830 vehicles 80% reported repaired built Apr 1, 2018 – May 30, 2019

Problem Nissan North America, Inc. (Nissan) is recalling certain 2018-2019 Nissan Altima, Armada, Frontier, Kicks, Leaf, Maxima, Murano, NV, NV200, Pathfinder, Rogue, Rogue Sport, Sentra, Titan, Titan Diesel, Versa Note and Versa Sedan vehicles, as well as Infiniti Q50, Q60, QX30 and QX80 vehicles. Additionally included are 2019 Nissan GT-R and Taxi and Infiniti QX50, QX60, Q70, Q70L vehicles. The back-up camera and display settings can be adjusted such that the rear view image is no longer visible and the system will retain that setting the next time the vehicle is placed in reverse. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) num Risk The lack of an image in the back-up camera display increases the risk of a crash. Fix Nissan will notify owners in phases, having dealers update the back-up camera settings software, free of charge. The recall began November 11, 2019 and all affected VINs should be activated. Owners may contact Nissan customer service at 1-800-867-7669 or INFINITI customer service at 1-800-662-6200.

Filed with NHTSARemedy instructions PDF

NHTSA campaign 19V654000 reported Sep 12, 2019 Nissan North America, Inc. the full filing, and every vehicle covered →

▲high

Fuel System, Gasoline

14,192 vehicles 87% reported repaired built Mar 10, 2015 – Apr 5, 2017

Problem Nissan North America, Inc. (Nissan) is recalling certain 2016-2018 Infiniti Q50 and 2017 Infiniti Q60 vehicles equipped with a 2.0L engine. Incorrect Fuel Pump Control Module (FPCM) software may allow the fuel level in the main tank to be too low to supply fuel to the engine, causing the engine to stall while driving. Risk An engine stall can increase the risk of a crash. Fix Nissan will notify owners, and Infiniti dealers will reprogram the Fuel Pump Control Module (FPCM) with corrected software, free of charge. The recall began August 29, 2017. Owners may contact Infiniti customer service at 1-800-662-6200.

Filed with NHTSAOwner letter PDF

NHTSA campaign 17V476000 reported Jul 27, 2017 Nissan North America, Inc. the full filing, and every vehicle covered →

These are vehicle campaigns — the ones the automaker filed against this model. NHTSA also records equipment recalls, filed by a parts maker against a component (a tyre, a child seat, an aftermarket part), and those are not listed here or counted above. nhtsa.gov/recalls shows both for a VIN.

NHTSA defect investigations

Electrical System:Propulsion System — Pedestrian alert sounds closed

NHTSA received a petition on or about July 18, 2022, requesting that Federal Motor Vehicle Safety Standard (FMVSS) 141 be applied to all electric and hybrid vehicles operating in the United States. The petition can be reviewed at NHTSA.gov under ODI Number 11486072. FMVSS 141 establishes performance requirements for pedestrian alert sounds for motor vehicles. The standard applies to hybrid and electric vehicles that have a gross vehicle weight rating of 4,536 KG or less or are defined as low-speed vehicles. The standard became fully applicable to all such vehicles manufactured on or after March 1, 2021. On January 27, 2023, NHTSA opened Defect Petition (DP) 22-005 to evaluate the subject mat

Opened Jan 27, 2023 · closed Aug 7, 2023 · action DP22005 · the investigation’s page →

Whether any of this applies to one specific Q50

A campaign covers a build range, not a model year, so two identical-looking cars from 2018 can differ. Both of these check a VIN against the manufacturer’s own list, free, in about ten seconds. Infiniti publishes its own lookup because federal rule 49 CFR 573.15 requires it to, and to keep it current to within seven days.

NHTSA VIN check →Infiniti’s own VIN lookup →

Hear about a recall before the letter does

The manufacturer’s letter is the last step of a recall: it has up to 60 days after filing to mail owners, at the address on the registration. We email you the day NHTSA posts a recall on the 2018 Infiniti Q50, with what to do next. Nothing else, ever — no newsletter, no marketing, one-click unsubscribe in every message.

Owner complaints

Source: NHTSA complaint database

44complaints filed

1 involved a crash · 1 a fire · 0 injuries · 0 deaths reported

10 per 10,000 built · Infiniti reported 42,559 Q50 built (its Early Warning production report to NHTSA)

Filed per year: 2018: 6 · 2019: 5 · 2020: 5 · 2022: 1 · 2023: 6 · 2024: 5 · 2025: 10 · 2026: 6

Most-cited components

Engine 19

Air Bags 9

Unspecified 6

Fuel/Propulsion System 6

Electrical System 6

Wheels 3

In owners' own words

Filed with NHTSA by the people who own these cars, one per problem area. Quoted as written, with anything identifying removed.

Car has white smoke coming from the exhaust and the oil level keeps decreasing. Car stalls and takes time to accelerate P0106 code pops up from engine. There’s a rattle and whine noise coming from the engine bay. Also the gas was stuck accelerating. Had to switch the car to neutral so it does continue accelerating.

Fuel/Propulsion System Mar 22, 2025 NHTSA owner report · ODI 11649920

The contact owns a 2018 Infiniti Q50. The contact stated that while driving at an undisclosed speed, the "Low Oil Pressure - STOP", message was displayed, and the contact stopped driving the vehicle. The contact stated that while starting the vehicle, the engine was abnormally loud.

Engine at 107,000 miles Jan 27, 2025 NHTSA owner report · ODI 11638873

The locks on the car automatically keep locking all day long and drain my battery, I have had to have my car jump started and recently towed to Infiniti dealer and they are stating there have been known issues with this electrical problem with rain getting into the sunroof and deteriorating the lines that short out the other systems.

Electrical System Oct 21, 2024 NHTSA owner report · ODI 11621012

The airbag passenger light is illuminated causing air bag system to remain off until resolve. The vehicle was taken in for inspection and dealer confirmed diagnostic results found Occupant sensor malfunctioning. Under warranty, the sensor was covered, but after installation the system also found that wasn’t the only thing to replace.

Air Bags Jan 24, 2024 NHTSA owner report · ODI 11567612

The contact owns a 2018 Infiniti Q50. The contact stated that the back-up camera was flickering while in use. The contact stated that over time, the back-up camera screen had gone blank and failed to operate as needed.

Back Over Prevention at 130,000 miles Jul 14, 2023 NHTSA owner report · ODI 11532224

Run flat tires went flat on a pothole that was not even realized on a sunday with no service station open. Even if they were, the tire has to be replaced, cannot be repaired. There is no spare tire option- when contacted, company refused " not possible". This is not safe at all and must be addressed.

Wheels at 2,637 miles Nov 10, 2018 NHTSA owner report · ODI 11150686

Complaint counts are raw owner reports to NHTSA, not verified defects, and scale with how many were sold. Use them to spot patterns, not to rank.

Reported by Infiniti itself: 3 death-or-injury claims on this model year in its quarterly Early Warning reports to NHTSA (49 CFR 579.21): 3 injured, as claimed, not verified — about 7.0 per 100,000 built. Every Q50 model year, by year and system → Dated and by system, they are exhibit F of the defect dossier.

When owners reported it

Reported at 29k

miles, typically

Half the 16 owner reports with an odometer reading on file fall between 22,000 and 54,000 miles. That is when problems get reported, which is not the same as when they start — and not a failure rate, because nobody knows how many of these cars never had a problem at all.

Too few readings for a curve — the 16 on file: 3 under 10k, 1 10k–20k, 5 20k–30k, 2 30k–40k, 2 50k–60k, 1 80k–90k, 2 100k–150k.

Odometer readings as filed by owners with NHTSA. Readings under 100 or over 400,000 miles are dropped as data entry rather than history, and a component needs at least 12 readings before a median is shown for it.

Crash ratings

Source: NHTSA NCAP

Configuration	Overall	Frontal	Side	Rollover	Rollover risk
4 DR AWD	not rated	not rated	not rated	★★★★★	10%
4 DR AWD	not rated	not rated	not rated	★★★★★	10%
4 DR RWD	not rated	not rated	not rated	★★★★★	10%
4 DR RWD	not rated	not rated	not rated	★★★★★	10%

NHTSA New Car Assessment Program.

Service bulletins & campaigns

Source: NHTSA manufacturer communications

Extended coverage on file 1 filing by the manufacturer with NHTSA naming this model year

10 years or 120,000 miles, whichever comes first · Infiniti bulletin P4A05, P4A06***** Retailer Announcement ***** INFINITI is committed to providing the highest levels of product quality and customer satisfaction.

The term and the vehicles it covers are the manufacturer’s, as NHTSA’s summary of each filing states them; a dealer checks one particular car by its VIN. Every warranty extension on file, all makes →

Communicationsfiled with NHTSA 244

Most recentmanufacturer date 2026-04-13

Kindsas classified by NHTSA 244 service bulletins

Most often about: Electrical System, Equipment, Engine, Air Bags, Visibility/Wiper.

ITB09-063C Service bulletin
2026-04-13 · Structure — Body
CERTIFICATION LABEL AND VIN PLATE REPLACEMENT SERVICE INFORMATION Because of collision damage or other vehicle repair, a replacement “Certification Label” or “VIN Plate/Label” may be needed. HINT: Certification Label = FMVSS (Federal Motor Vehicle Safety Standards) label. These items may be available from Infiniti by request if certain criteria are met. This bulletin lists the criteria and provide
ITB12-011R Service bulletin
2026-03-30 · Electrical System
TELEMATICS SERVICE INFORMATION See ITB19-029 for models built after those listed above for a different Service Procedure. SERVICE INFORMATION The Applied Vehicles are equipped with a wireless communication device called a Telematics Communication Unit (TCU). With an active Infiniti Connection® or Infiniti InTouch Services™, the TCU communicates with the Infiniti Data Center to provide various secu
ITB23-023A Service bulletin
2025-02-20 · Electrical System
AEB WARNING LIGHT IS ON WITH WARNING MESSAGES DISPLAYED ON COMBINATION METER APPLIED VEHICLES: 2015-2024 Q50 (V37) 2015-2018 Q50 Hybrid (HV37) 2017-2022 Q60 (CV37) 2015-2019 Q70 (Y51) 2015-2018 Q70 Hybrid (HY51) 2019-2024 QX50 (J55) 2022-2024 QX55 (FJ55) 2015-2021 QX60 (L50) 2022-2024 QX60 (L51) 2015-2019 QX60 Hybrid (L50H) 2015-2024 QX80 (Z62) SERVICE INFORMATION The AEB system is designed to tur
P4A05, P4A06 Service bulletin
2025-02-04 · Engine
***** Retailer Announcement ***** INFINITI is committed to providing the highest levels of product quality and customer satisfaction. Therefore, INFINITI is conducting a warranty extension to Full Useful Life (FUL) of 10 years or 120,000 miles, whichever occurs first, if white smoke or oil leak occurs with MIL-On condition that requires replacement of the turbocharger assembly on model year 2016-2
ITB17-050C Service bulletin
2025-02-04 · Engine
MIL ON WITH DTC(S) STORED IN THE ECM This bulletin is no longer active. Please discard previous versions of ITB17-050.
ITB22-038D Service bulletin
2025-02-04 · Engine
TURBOCHARGER REPLACEMENT PROCEDURE APPLIED ENGINES: VR30DDTT IF YOU CONFIRM One or both turbochargers require replacement. ACTION 1. Replace the affected turbocharger(s).  Refer to the SERVICE PROCEDURE in this bulletin for the updated procedure. IMPORTANT: You MUST closely follow the entire SERVICE PROCEDURE as it contains information that is essential to successfully completing this repair. 2.
ITB24-017A Service bulletin
2025-01-14 · Electrical System
ENGINE ROOM SUB-HARNESS IF YOU CONFIRM DTC P06DA-00 for “ENGINE OIL PRESSURE CONTROL” is stored as current (active) with CONSULT-III plus (C-III plus). ACTION Replace the engine room sub-harness. Refer to the SERVICE PROCEDURE in this bulletin. IMPORTANT: The purpose of ACTION (above) is to give you a quick idea of the work you will be performing. You MUST closely follow the entire SERVICE PROCEDU
ITB19-024D Service bulletin
2024-09-19 · Air Bags
DTC B00A0-00 STOREIF YOU CONFIRM DTC B00A0-00 (OCCUPANT DETECTION SENSOR UNIT) is stored, AND OCS zero point reset cannot be performed, (continued on the next page)D

A service bulletin is the manufacturer telling its dealers how to diagnose or repair a known condition. It is not a recall, not a finding that the vehicle is defective, and the work is not automatically free — though a bulletin is often what a dealer works from when you describe a symptom, so quoting the document number can save a diagnosis. The count is every communication filed; the list shows the most recent, one entry per campaign, because a single campaign is usually filed as several documents on the same day. The summaries are NHTSA's; the full documents come from the manufacturer.

Diagnostic trouble codes on file

Source: NHTSA manufacturer communications and complaints

Codes documented against this model year in the federal record. A code appearing here does not mean this vehicle will set it — it means the code is part of this nameplate-year's documented history.

Code	What it means	Most often filed under	Where it appears
P0456 P0456 on Infiniti →	A very small leak in the evaporative emissions system.	Engine · Gas cap →	14 bulletins
P0101 P0101 on Infiniti →	The mass air flow sensor is reporting a figure the engine computer does not believe for the conditions.	Electrical System · Mass air flow sensor →	5 bulletins
P0442 P0442 on Infiniti →	A small leak in the evaporative emissions system.	Engine · Gas cap →	5 bulletins
P0455 P0455 on Infiniti →	A large leak in the evaporative emissions system — often a fuel cap left off.	Engine · Gas cap →	5 bulletins
C1A03 C1A03 on Infiniti →	Manufacturer-defined — the meaning is set by the automaker, not the standard.	Electrical System · Battery →	4 bulletins
C1A04 C1A04 on Infiniti →	Manufacturer-defined — the meaning is set by the automaker, not the standard.	Electrical System · Battery →	4 bulletins
C1B01 C1B01 on Infiniti →	Manufacturer-defined — the meaning is set by the automaker, not the standard.	Electrical System · Battery →	4 bulletins
P0087 P0087 on Infiniti →	Fuel rail pressure is below what the system commanded.	Electrical System · Fuel pump →	3 bulletins
P0106 P0106 on Infiniti →	The manifold pressure sensor reading does not track what the engine is doing.	Electrical System · Battery →	2 bulletins · 1 owner report
P0448 P0448 on Infiniti →	Manufacturer-defined — the meaning is set by the automaker, not the standard.	Electrical System · Battery →	3 bulletins
P2008 P2008 on Infiniti →	Manufacturer-defined — the meaning is set by the automaker, not the standard.	Electrical System · Battery →	3 bulletins
B130C B130C on Infiniti →	Manufacturer-defined — the meaning is set by the automaker, not the standard.	Equipment	2 bulletins

Generic codes (the second character is 0 or 2) mean the same thing on every vehicle sold in the United States. Manufacturer-specific codes (1 or 3) mean whatever the automaker assigned, and no honest source can define them for you — which is why the ones here carry the evidence instead of a definition. A code is a link when enough separate federal documents name it across the catalogue to be worth a page of its own; the rest are listed here, where the vehicle is the context that makes them mean something.

At the New York inspection station

Source: New York State DMV

New York inspections 4.2%

failed emissions

1,527 initial inspections of 1,496 vehicles.

Measure	The 2018 Q50	Every 2018 vehicle	Behind it
Failed the emissions check	4.2%	3.0%	1,523
Failed the safety inspection	1.6%	1.9%	1,527
Air-bag warning lamp stayed lit	0.65%	0.22%	1,527
Miles driven a year	8,893	10,002	odometer at inspection
Average odometer	73,447	82,833	odometer at inspection

New York’s emissions test on these model years is an on-board diagnostics check: it fails a car whose check-engine light is on or whose self-tests have not finished. First inspections only, so a car that failed and came back is counted once; private and special plates, not taxis, livery or commercial plates. A rate appears only where at least 200 inspections stand behind it. “Every 2018 vehicle” is every 2018 model-year car, SUV and pickup inspected in the same window, all makes. This is the state’s record of test results, not a reliability score by itself. Source: New York State Department of Motor Vehicles, Vehicle Inspections (data.ny.gov, Open NY terms).

Q50 by model year

all years, side by side →

Year Safety Recalls Complaints

2024 A 0 0 23 mpg 2023 A 0 8 23 mpg 2022 A 0 1 23 mpg 2021 B 3 6 23 mpg 2020 A 0 3 23 mpg 2019 A 1 30 25 mpg 2018 this page B 3 44 29 mpg 2017 C 4 63 29 mpg 2016 C 4 39 30 mpg

Common questions about the 2018 Q50

Source: EPA, NHTSA and manufacturer press kits

Does the 2018 Infiniti Q50 have any recalls?

NHTSA has posted 3 recall campaigns for the 2018 Infiniti Q50. The most serious on file is 24V470000, covering Power Train. Check your own VIN at nhtsa.gov/recalls; a recall applies to specific build ranges, not every car.

How safe is the 2018 Infiniti Q50?

NHTSA has not published a crash-test rating for the 2018 Infiniti Q50 yet. On the recall record WhichTrim grades it B (83/100), which measures open and severe recalls rather than crash protection.

What is the fuel economy of the 2018 Infiniti Q50?

Across the 8 EPA-rated configurations of the 2018 Infiniti Q50, the best EPA combined figure is 29 mpg. Figures are the EPA's own, per configuration, and every one is listed above.

What are the dimensions of the 2018 Infiniti Q50?

Transport Canada measured it at 189.0 in long, 71.7 in wide (body, without mirrors), 57.5 in tall, on a 112.2 in wheelbase. Curb weight: 3,845–4,213 lb depending on configuration. Those are its measurements of the North American versions; every figure is in the table above.

What do owners complain about on the 2018 Infiniti Q50?

Owners have filed 44 complaints with NHTSA about the 2018 Infiniti Q50, most often about engine, air bags, unspecified. Of those, 1 involved a crash, 1 a fire. Complaints are unverified owner reports, so treat the pattern as a signal and the individual report as an anecdote.

How clean is the 2018 Infiniti Q50?

The EPA smog rating for the 2018 Infiniti Q50 is 3 out of 10. That score covers tailpipe pollutants other than greenhouse gases, and it only compares vehicles within the same model year. It is certified for all fifty states, so it can be registered new anywhere in the U.S. Its configurations were certified to different standards — California LEV-II ULEV, California LEV-III ULEV125, Federal Tier 3 Bin 125 — which the table above lists per configuration.

Are there service bulletins for the 2018 Infiniti Q50?

The manufacturer has filed 244 service bulletins and related communications with NHTSA for the 2018 Infiniti Q50, most often covering electrical system, equipment, engine. The most recent is dated 2026-04-13. A bulletin is not a recall: it is the repair procedure a manufacturer sends its dealers for a condition it knows about, and the work is not automatically paid for. It is still worth knowing — if the symptom matches, quoting the bulletin number at the service desk can save a diagnosis. The document numbers and summaries are listed above.

How does the 2018 Infiniti Q50 do at state inspection?

In New York’s inspection lanes over the 12 months to Oct 10, 2026, the 2018 Infiniti Q50 failed the emissions check on 4.2% of first inspections — higher than the 3.0% for every 2018 model-year vehicle inspected; and the safety inspection on 1.6% (every 2018 vehicle: 1.9%). The figures are New York State DMV’s own inspection records, first inspections only, and the table above sets each one against every vehicle of the same model year.

What we hold, and what an empty row means

Paid vehicle-history reports will not tell you the difference between “nothing happened to this car” and “we never received that record” — both of the big two say as much in their own help pages. Most of what is on this page comes from complete federal registers, so we can tell you which is which, row by row.

Data	Held	Source	What it covers — or what empty means
Fuel economy & configurations	8 configurations	EPA certification records	Every configuration the EPA certified for sale, with its own test figures.
Emission certificates	8 configurations	EPA emission certificates	Smog rating, standard and the sales area that decides where the car can be sold new.
Recalls	3	NHTSA recall campaigns	A complete federal register: every campaign covering this model year, with severity and advisory flags.
Owner complaints	44	NHTSA complaint database	Also complete, but unverified: these are reports owners filed, not findings. Counts scale with how many were sold.
Crash ratings	4 tested	NHTSA NCAP	Only the configurations NHTSA chose to crash-test, which is never all of them.
Service bulletins	244	NHTSA manufacturer communications	Everything the manufacturer told its dealers about a defect or malfunction, short of a recall.
Investigations	1	NHTSA Office of Defects Investigation	Open and closed defect investigations, with the agency's own narrative.
Driver-assist crash reports	none	NHTSA Standing General Order 2021-01	No report has been filed. Only entities named in the order report, and only crashes they hear of — so this is also what an unequipped car, or a manufacturer without telematics, looks like.
Specifications filed with NHTSA	9 fields	NHTSA vPIC, decoded from VIN patterns	What the manufacturer filed under the federal VIN rule — a configuration, not the full trim ladder.
Measured dimensions	7 fields	Transport Canada, Canadian Vehicle Specifications	Length, width, height, wheelbase, track and curb weight, measured on the North American versions.
Trims, pricing & equipment	none	Manufacturer press kit	We have not transcribed a press kit for this model year yet. This is our gap, not the manufacturer's — the one row here where an empty cell means we are behind.

Rebuilt nightly; this page was generated 2026-10-26. Every figure above is traceable to the source named beside it, and the JSON for this page carries the same values with their identifiers.

Sources & method

Safety Signal starts every model-year at 100 and subtracts points per open NHTSA recall campaign by severity: critical 15 (fire risk, park-outside or do-not-drive advisories), high 8 (brakes, steering, airbags, loss of drive power, structure, battery), moderate 6, minor 3 (software, labels, lighting fixed by an update). The most serious recall counts in full and each further one counts 85% of the one before, because a vehicle sold in millions is recalled more often than a rare one without being more dangerous — and because a flat subtraction bottomed the scale out, scoring a vehicle with 22 recalls within a point of one with six. A ≥ 90, B ≥ 80, C ≥ 70, D ≥ 60, otherwise F. Read it as what it counts: recall campaigns on the federal record, weighted by severity. The damping reduces the sales bias by roughly 40% but does not remove it: like our complaint counts, this is not normalized by how many were sold, so a best-seller still scores somewhat worse than an obscure model with the same real risk. NHTSA crash ratings, do-not-drive and park-outside advisories, and the crash, fire, injury and death counts in owner complaints are reported separately on every page and never blended into the letter — a vehicle can hold five stars and a poor letter at once, and where that happens we say so rather than leave you to notice. Because the scale subtracts from a clean sheet, a model year too new to have been recalled, complained about or bulletined scores full marks on an empty record; we label those grades provisional rather than present them as earned.

EPA figures come from fueleconomy.gov vehicle records. Recalls, complaints, investigations and crash ratings come from NHTSA's public flat files, refreshed nightly.

JSON for this page · API