2018 Porsche 911
The 2018 Porsche 911 is sold in the U.S. as a gas coupe with 41 EPA-rated configurations. The most efficient version, the 911 Carrera, is EPA-rated at 25 mpg combined. NHTSA lists 2 recall campaigns for this model year, which gives it a Safety Signal grade of B. Owners have filed 2 complaints, most often about the electrical system.

| Trim | Powertrain | Drive | MSRP | HP | Torque | MPG comb | Wheels |
|---|---|---|---|---|---|---|---|
| 911 Carrera T | Gas | RWD | — | 370 hp | 331 lb-ft | 19 mpg | 20 in |
| 911 Carrera T PDK | Gas | RWD | — | 370 hp | 331 lb-ft | 22 mpg | 20 in |
MSRP excludes destination. Open a trim for the complete spec sheet and standard/optional equipment. Have the car in front of you? Decode its VIN to see which of these trims it is and what it was priced at.
Specs & fuel economy
Source: EPA fueleconomy.gov| Configuration | Powertrain | Drive | Engine / motor | City | Hwy | Comb | Annual fuel* |
|---|---|---|---|---|---|---|---|
| 911 Carrera | Gas | RWD | 3.0L 6-cyl turbo | 22 | 30 | 25 | $3,300 |
| 911 Carrera 4 | Gas | 4WD | 3.0L 6-cyl turbo | 22 | 28 | 24 | $3,400 |
| 911 Carrera 4 Cabriolet | Gas | 4WD | 3.0L 6-cyl turbo | 21 | 28 | 24 | $3,400 |
| 911 Carrera 4S | Gas | 4WD | 3.0L 6-cyl turbo | 21 | 28 | 24 | $3,400 |
| 911 Carrera 4S Cabriolet | Gas | 4WD | 3.0L 6-cyl turbo | 21 | 28 | 24 | $3,400 |
| 911 Carrera Cabriolet | Gas | RWD | 3.0L 6-cyl turbo | 22 | 28 | 24 | $3,400 |
| 911 Carrera S | Gas | RWD | 3.0L 6-cyl turbo | 22 | 28 | 24 | $3,400 |
| 911 Carrera S Cabriolet | Gas | RWD | 3.0L 6-cyl turbo | 22 | 28 | 24 | $3,400 |
| 911 Targa 4 | Gas | 4WD | 3.0L 6-cyl turbo | 22 | 28 | 24 | $3,400 |
| 911 Targa 4S | Gas | 4WD | 3.0L 6-cyl turbo | 21 | 27 | 24 | $3,400 |
| 911 Carrera | Gas | RWD | 3.0L 6-cyl turbo | 20 | 29 | 23 | $3,550 |
| 911 Carrera 4 | Gas | 4WD | 3.0L 6-cyl turbo | 20 | 28 | 23 | $3,550 |
| 911 Carrera 4S | Gas | 4WD | 3.0L 6-cyl turbo | 20 | 28 | 23 | $3,550 |
| 911 Carrera Cabriolet | Gas | RWD | 3.0L 6-cyl turbo | 20 | 29 | 23 | $3,550 |
| 911 Carrera GTS | Gas | RWD | 3.0L 6-cyl turbo | 20 | 26 | 23 | $3,550 |
| 911 Carrera S | Gas | RWD | 3.0L 6-cyl turbo | 20 | 29 | 23 | $3,550 |
| 911 Carrera S Cabriolet | Gas | RWD | 3.0L 6-cyl turbo | 20 | 28 | 23 | $3,550 |
| 911 Carrera 4 Cabriolet | Gas | 4WD | 3.0L 6-cyl turbo | 19 | 28 | 22 | $3,750 |
| 911 Carrera 4 GTS | Gas | 4WD | 3.0L 6-cyl turbo | 20 | 26 | 22 | $3,750 |
| 911 Carrera 4 GTS Cabriolet | Gas | 4WD | 3.0L 6-cyl turbo | 20 | 25 | 22 | $3,750 |
| 911 Carrera 4S Cabriolet | Gas | 4WD | 3.0L 6-cyl turbo | 19 | 28 | 22 | $3,750 |
| 911 Carrera GTS Cabriolet | Gas | RWD | 3.0L 6-cyl turbo | 20 | 26 | 22 | $3,750 |
| 911 Carrera T | Gas | RWD | 3.0L 6-cyl turbo | 20 | 26 | 22 | $3,750 |
| 911 Targa 4 | Gas | 4WD | 3.0L 6-cyl turbo | 19 | 28 | 22 | $3,750 |
| 911 Targa 4 GTS | Gas | 4WD | 3.0L 6-cyl turbo | 20 | 26 | 22 | $3,750 |
| 911 Targa 4S | Gas | 4WD | 3.0L 6-cyl turbo | 19 | 28 | 22 | $3,750 |
| 911 Carrera 4 GTS | Gas | 4WD | 3.0L 6-cyl turbo | 18 | 26 | 21 | $3,900 |
| 911 Carrera 4 GTS Cabriolet | Gas | 4WD | 3.0L 6-cyl turbo | 18 | 26 | 21 | $3,900 |
| 911 Carrera GTS | Gas | RWD | 3.0L 6-cyl turbo | 18 | 26 | 21 | $3,900 |
| 911 Carrera GTS Cabriolet | Gas | RWD | 3.0L 6-cyl turbo | 18 | 26 | 21 | $3,900 |
| 911 Targa 4 GTS | Gas | 4WD | 3.0L 6-cyl turbo | 18 | 26 | 21 | $3,900 |
| 911 Turbo | Gas | AWD | 3.8L 6-cyl turbo | 19 | 24 | 21 | $3,900 |
| 911 Turbo Cabriolet | Gas | AWD | 3.8L 6-cyl turbo | 19 | 24 | 21 | $3,900 |
| 911 Turbo S | Gas | AWD | 3.8L 6-cyl turbo | 19 | 24 | 21 | $3,900 |
| 911 Turbo S Cabriolet | Gas | AWD | 3.8L 6-cyl turbo | 19 | 24 | 21 | $3,900 |
| 911 Carrera T | Gas | RWD | 3.0L 6-cyl turbo | 16 | 25 | 19 | $4,350 |
| 911 Turbo S Exclusive | Gas | AWD | 3.8L 6-cyl turbo | 17 | 23 | 19 | $4,350 |
| 911 GT2 RS | Gas | RWD | 3.8L 6-cyl turbo | 15 | 21 | 17 | $4,850 |
| 911 GT3 | Gas | RWD | 4.0L 6-cyl | 15 | 20 | 17 | $4,850 |
| 911 GT3 Touring | Gas | RWD | 4.0L 6-cyl | 14 | 21 | 17 | $4,850 |
| 911 GT3 | Gas | RWD | 4.0L 6-cyl | 13 | 21 | 16 | $5,150 |
*EPA estimate at 15,000 miles/year at EPA reference fuel and electricity prices. fueleconomy.gov record ids: 39194, 39202, 39203, 39205, 39206, 39196, 39198, 39200, 39207, 39209.
Emissions & certification
Source: EPA emission certificates| Configuration | Smog rating | Emission standard | Where it can be sold new | SmartWay |
|---|---|---|---|---|
| 911 Carrera, 911 Carrera 4, 911 Carrera 4 Cabriolet, 911 Carrera 4 GTS Cabriolet, 911 Carrera Cabriolet, 911 Carrera GTS, 911 Carrera GTS Cabriolet, 911 Carrera S, 911 Targa 4, 911 Targa 4 GTS, 911 Targa 4S | 1 / 10 | California LEV-III LEV160 / Federal Tier 3 Bin 160 | All 50 states (federal, all altitudes); California and states following California standards | — |
| 911 Carrera 4, 911 Carrera 4 GTS, 911 Carrera 4 GTS Cabriolet, 911 Carrera 4S, 911 Carrera 4S Cabriolet, 911 Carrera GTS Cabriolet, 911 Carrera S, 911 Carrera S Cabriolet, 911 Carrera T | 1 / 10 | Federal Tier 3 Bin 160 / California LEV-III LEV160 | All 50 states (federal, all altitudes); California and states following California standards | — |
| 911 GT2 RS, 911 GT3, 911 GT3 Touring, 911 Turbo, 911 Turbo Cabriolet | 1 / 10 | California LEV-II LEV160 / Federal Tier 3 Bin 160 | All 50 states (federal, all altitudes); California and states following California standards | — |
| 911 Turbo S, 911 Turbo S Cabriolet, 911 Turbo S Exclusive | 1 / 10 | Federal Tier 3 Bin 160 / California LEV-II LEV160 | 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. Gas-guzzler tax applies to 911 GT3, 911 GT3 Touring — a federal excise the manufacturer pays and prices in.
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.
Factory warranty running out?
The 2018 Porsche 911 is in the years where transmission, electronics and drivetrain repairs land on the owner. What an extended plan does and does not cover is worth reading before a dealer quotes you one.
What to check before you buy →Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.
Recalls (2)
Source: NHTSA recall databaseAir Bags
AKA4These 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
Air Bags:Frontal:Passenger Side:Inflator Module — Desiccated Air Bag Inflator Rupture open
From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant to burn too quickly when ignited. The rapid burning can cause the inflator to rupture during deployment, potentially causing serious or even fatal injury to vehicle occupants. See 2016 Blomquist Report at www.nhtsa.gov/sites/nhtsa.gov/files/documents/expert_report-hrblomquist.pdf. Consequently, all frontal inflators using propellant 2004 that do not contain a "desiccant" (a subst
Opened Sep 17, 2021 · action EA21002 · the investigation’s page →
Whether any of this applies to one specific 911
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. Porsche publishes its own lookup because federal rule 49 CFR 573.15 requires it to, and to keep it current to within seven days.
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 Porsche 911, with what to do next. Nothing else, ever — no newsletter, no marketing, one-click unsubscribe in every message.
Parts & accessories for the 2018 Porsche 911
Search by fitment on eBay Motors — OEM take-offs, aftermarket, and the trim pieces dealers no longer stock. The listing and the price are the seller's.
Find parts for this 911 →Owner complaints
Source: NHTSA complaint database0 involved a crash · 0 a fire · 0 injuries · 0 deaths reported
1.9 per 10,000 built · Porsche reported 10,591 911 built (its Early Warning production report to NHTSA)
Filed per year: 2022: 1 · 2023: 1
Most-cited components
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.
The contact owns a 2018 Porsche 911 GT3. The contact stated that while reversing, the back over prevention system failed to display a rear-view image. After a visual inspection of the rear of the vehicle, the contact became aware that the reverse lights also failed to illuminate. No warning lights were illuminated.
The contact owns a 2018 Porsche Carrera. The contact stated while driving at 50MPH when the contact attempted to turn off their headlight switch on the vehicle but instead accidentally hit the ignition switch which caused the engine to shut off and the vehicle to coast on its own.
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.
Crash ratings
Source: NHTSA NCAPNHTSA has not published 5-Star crash ratings for this model year.
Service bulletins & campaigns
Source: NHTSA manufacturer communications- Term not in NHTSA’s summary · Porsche warranty extension 18/26Warranty Information: Warranty Extension for Transmission Electronics Control Unit (18/26)
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 Porsche warranty extension (5) → · Every warranty extension on file, all makes →
Most often about: Engine, Unknown Or Other, Electrical System, Equipment, Structure.
- No. 37-26 Service bulletin2026-09-22 · Engine
- Manufacturer's Certificate for Overview of approved Porsche C40 GT engine oils
- No. 28-26 Service bulletin2026-09-22 · Power Train
- Manufacturer's Certificate for Overview of Approved Porsche C40 Engine Oils. Note that this bulletin covers all models back to model year 1984, for which C40 engine oils are allocated.
- No. 27-26 Service bulletin2026-09-22 · Engine
- Manufacturer's Certificate for Overview of Approved Porsche C20 Engine Oils. Note that the bulletin covers all models back to model year 1984, for which C20 engine oils are allocated.
- No. 26-26 Service bulletin2026-09-22 · Power Train
- Manufacturer's Certificate for Overview of Approved Porsche C30 Engine Oils. Note that the bulletin includes all models back to model year 1984, for which C30 engine oils are allocated.
- No. 25-26 Service bulletin2026-09-22 · Engine
- Manufacturer's Certificate for Overview of Approved Porsche A40 Engine Oils. Note that this bulletin covers all vehicles from model year 1997 to 2020, for which A40 engine oils are assigned. Model years 1997-2001 are not available for selection in the system.
- SPTL2609 Service bulletin2026-09-14 · Steering
- Special Tools and Equipment Information for alignment machines - Q3 2026 Software Spec Update Available
- No. 12-26 Service bulletin2026-09-01 · Electrical System
- Technical Information for Damage to Nano Plug Contacts Due to Utilization of Incorrect Measuring Equipment
- SPTL2314a Service bulletin2026-08-28 · Unknown Or Other
- Special Tools and Equipment Information for Diagnostic Equipment Standards for all USA Porsche Centers
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 complaintsCodes 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 |
|---|---|---|---|
| P0133 | The upstream bank 1 oxygen sensor is responding too slowly to be trusted. | Engine · Oxygen sensor → | 1 bulletin |
| P0153 | The upstream bank 2 oxygen sensor is responding too slowly. | Engine | 1 bulletin |
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.
Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.
At the New York inspection station
Source: New York State DMVIn New York’s inspection lanes over the 12 months to Oct 10, 2026, the 2018 Porsche 911 failed the emissions check on 3.3% of first inspections — close to the 3.0% for every 2018 model-year vehicle inspected; and the safety inspection on 0% (every 2018 vehicle: 1.9%).
failed emissions
366 initial inspections of 356 vehicles.
| Measure | The 2018 911 | Every 2018 vehicle | Behind it |
|---|---|---|---|
| Failed the emissions check | 3.3% | 3.0% | 364 |
| Failed the safety inspection | 0% | 1.9% | 366 |
| Air-bag warning lamp stayed lit | 0.27% | 0.22% | 366 |
| Miles driven a year | 2,700 | 10,002 | odometer at inspection |
| Average odometer | 22,471 | 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).
Common questions about the 2018 911
Source: EPA, NHTSA and manufacturer press kitsDoes the 2018 Porsche 911 have any recalls?
NHTSA has posted 2 recall campaigns for the 2018 Porsche 911. The most serious on file is 19V179000, covering Air Bags. Check your own VIN at nhtsa.gov/recalls; a recall applies to specific build ranges, not every car.
How safe is the 2018 Porsche 911?
NHTSA has not published a crash-test rating for the 2018 Porsche 911 yet. On the recall record WhichTrim grades it B (89/100), which measures open and severe recalls rather than crash protection.
What is the fuel economy of the 2018 Porsche 911?
Across the 41 EPA-rated configurations of the 2018 Porsche 911, the best EPA combined figure is 25 mpg. Figures are the EPA's own, per configuration, and every one is listed above.
What do owners complain about on the 2018 Porsche 911?
Owners have filed 2 complaints with NHTSA about the 2018 Porsche 911, most often about electrical system, back over prevention. Complaints are unverified owner reports, so treat the pattern as a signal and the individual report as an anecdote.
How clean is the 2018 Porsche 911?
The EPA smog rating for the 2018 Porsche 911 is 1 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 LEV160, California LEV-III LEV160, Federal Tier 3 Bin 160 — which the table above lists per configuration.
Are there service bulletins for the 2018 Porsche 911?
The manufacturer has filed 2424 service bulletins and related communications with NHTSA for the 2018 Porsche 911, most often covering engine, unknown or other, electrical system. The most recent is dated 2026-09-22. 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 Porsche 911 do at state inspection?
In New York’s inspection lanes over the 12 months to Oct 10, 2026, the 2018 Porsche 911 failed the emissions check on 3.3% of first inspections — close to the 3.0% for every 2018 model-year vehicle inspected; and the safety inspection on 0% (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 | 41 configurations | EPA certification records | Every configuration the EPA certified for sale, with its own test figures. |
| Emission certificates | 41 configurations | EPA emission certificates | Smog rating, standard and the sales area that decides where the car can be sold new. |
| Recalls | 2 | NHTSA recall campaigns | A complete federal register: every campaign covering this model year, with severity and advisory flags. |
| Owner complaints | 2 | NHTSA complaint database | Also complete, but unverified: these are reports owners filed, not findings. Counts scale with how many were sold. |
| Crash ratings | none | NHTSA NCAP | NHTSA has not tested this model year. Cars are selected for testing, so untested is not unsafe. |
| Service bulletins | 2424 | 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 | none | NHTSA vPIC, decoded from VIN patterns | We had no VIN pattern to decode for this model year, or the manufacturer filed nothing usable. |
| Trims, pricing & equipment | 2 trims | Manufacturer press kit | Transcribed from the manufacturer's own press material, every value carrying the document it came from. |
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. Trim-level specifications and pricing are transcribed from the manufacturer's official press kit; every value carries its source in the data file.