2021 Cadillac XT6
The 2021 Cadillac XT6 is sold in the U.S. as a gas compact SUV with 4 EPA-rated configurations. The most efficient version, the XT6 AWD, is EPA-rated at 23 mpg combined. NHTSA lists 2 recall campaigns for this model year, which gives it a Safety Signal grade of B. Owners have filed 21 complaints, most often about the engine. NHTSA crash-tested it at 5 stars overall.

Specs & fuel economy
Source: EPA fueleconomy.gov| Configuration | Powertrain | Drive | Engine / motor | City | Hwy | Comb | Annual fuel* |
|---|---|---|---|---|---|---|---|
| XT6 AWD | Gas | AWD | 2.0L 4-cyl turbo | 21 | 26 | 23 | $3,550 |
| XT6 FWD | Gas | FWD | 2.0L 4-cyl turbo | 21 | 27 | 23 | $3,550 |
| XT6 AWD | Gas | AWD | 3.6L 6-cyl | 18 | 25 | 21 | $3,200 |
| XT6 FWD | Gas | FWD | 3.6L 6-cyl | 19 | 26 | 21 | $3,200 |
*EPA estimate at 15,000 miles/year at EPA reference fuel and electricity prices. fueleconomy.gov record ids: 42904, 42896, 42962, 42955.
Emissions & certification
Source: EPA emission certificates| Configuration | Smog rating | Emission standard | Where it can be sold new | SmartWay |
|---|---|---|---|---|
| XT6 AWD, XT6 FWD | 7 / 10 | California LEV-III SULEV30 / Federal Tier 3 Bin 30 | All 50 states (federal, all altitudes); California and states following California standards | — |
| XT6 AWD, XT6 FWD | 6 / 10 | California LEV-III ULEV50 / Federal Tier 3 Bin 50 | 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 vPICDimensions Exterior
| Body style | Sport Utility Vehicle [SUV]/Multipurpose Vehicle [MPV] |
| Doors | 4 |
| GVWR class | Class 2E: 6,001 - 7,000 lb (2,722 - 3,175 kg) |
Engine Basics
| Cylinders | 4 |
| Displacement | 2 L |
| Engine configuration | In-Line |
Fuel Economy
| Fuel | Gasoline |
Seating
| Seat rows | 3 |
| Seating capacity | 7 seats |
Transmission
| Drivetrain | FWD/Front-Wheel Drive |
| Transmission | Automatic |
| Transmission speeds | 9 |
Driver assistance
Standard: Anti-lock brakes, Automatic emergency braking, Backup camera, Blind-spot monitoring, Forward collision warning, Lane departure warning, Lane keeping assist, Parking assist, Pedestrian automatic emergency braking, Rear cross-traffic alert
Optional: Adaptive cruise control
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 (seen: Luxury, Platinum Premium Luxury, Platinum Sport / Sport, Premium Luxury). Figures for the trim you are looking at may differ.
Dimensions & weight
Source: Transport Canada| Length | 198.8 in |
| Width (body, without mirrors) | 77.2 in |
| Height | 68.9 in |
| Wheelbase | 112.6 in |
| Track, front | 66.5 in |
| Track, rear | 66.1 in |
| Curb weight | 4,689 lb |
| Weight distribution, front/rear | 55/45 |
Measured by Transport Canada for its Canadian Vehicle Specifications database, which covers the North American versions of each model — here one configuration: 4-door SUV. 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.
Factory warranty running out?
The 2021 Cadillac XT6 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 databaseFuel System, Gasoline
N212335590These 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
Back Over Prevention: Sensing System: Camera — Rear-View Camera Failure closed
On July 22, 2022, the Office of Defects Investigation (ODI) opened a Preliminary Evaluation (PE22-006) to assess alleged failures of the rear-view camera (RVC) in Model Year (MY) 2020-2021 Cadillac XT5, XT6, and GMC Acadia vehicles. The complaints report that the screen for the RVC is black, sometimes with a red triangle and a circle with a line through it. To date, ODI has received a total of 18 complaints and several EWR Field Reports with allegations of the RVC image failing to display when the vehicle is in reverse. The reports have been received over the past 28 months with most occurring with low vehicle mileage. During the investigation, ODI learned incorrect crimping specifications w
Opened Jul 22, 2022 · closed Nov 21, 2022 · action PE22006 · the investigation’s page →
Whether any of this applies to one specific XT6
A campaign covers a build range, not a model year, so two identical-looking cars from 2021 can differ. Both of these check a VIN against the manufacturer’s own list, free, in about ten seconds. Cadillac 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 2021 Cadillac XT6, with what to do next. Nothing else, ever — no newsletter, no marketing, one-click unsubscribe in every message.
Parts & accessories for the 2021 Cadillac XT6
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 XT6 →Owner complaints
Source: NHTSA complaint database0 involved a crash · 0 a fire · 0 injuries · 0 deaths reported
9.9 per 10,000 built · Cadillac reported 21,199 XT6 built (its Early Warning production report to NHTSA)
Filed per year: 2021: 2 · 2023: 5 · 2024: 1 · 2025: 5 · 2026: 8
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.
I noticed a water sloshing sound behind the dash when first starting out for about a month. I didn’t get any warning lights or notice anything leaking under the car but when I checked under the hood the coolant reservoir was empty. I made appointment at GM dealership and they found I had a leak along the side seam of my radiator.
DTC P0128 engine coolant thermostat to open at a lower temperature than intended. The Check Engine Light appeared, a Steering warning appeared on my information screen, and the engine cooling fan continued to run excessively after turning off.
On September 15,2026, my vehicle experienced a catastrophic los of power steering assist accompanied by severe heavy steering. Please review General Motors TSB 20-NA-215 & TSB 17-NA-158 both addressing this issue. My 2021 vehicle has a build date of September 19, 2020 which falls "directly" in the time frame covered by these bulletins.
Your site shows no recalls. I got a recall for a repair I had to have done a few months ago. I just got the recall notice from GM, but when I called to inquire about a reimbursement, they state the recall was released in 10/2025. Even though your site says there was no recall at the time
The contact owns a 2021 Cadillac XT6. The contact stated that while reversing, the rear-view camera intermittently displayed a blank image. The vehicle was taken to the dealer, who was unable to duplicate the failure and informed the contact that the contact had to pay for the rear-view camera software update.
Cadillac XT6 – VIN: echanical Failures, Ignored Transmission Recall(s), and Dealer Negligence I write this letter to formally place General Motors Company on notice of a pattern of serious mechanical failures, ignored safety recalls, and dealership indifference involving my Cadillac XT6, referenced above.
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 Cadillac itself: 2 death-or-injury claims on this model year in its quarterly Early Warning reports to NHTSA (49 CFR 579.21): 2 injured, as claimed, not verified — about 9.4 per 100,000 built. Every XT6 model year, by year and system → Dated and by system, they are exhibit F of the defect dossier.
Crash ratings
Source: NHTSA NCAP| Configuration | Overall | Frontal | Side | Rollover | Rollover risk |
|---|---|---|---|---|---|
| SUV AWD | ★★★★★ | ★★★★★ | ★★★★★ | ★★★★☆ | 16% |
| SUV FWD | ★★★★★ | ★★★★★ | ★★★★★ | ★★★★☆ | 16% |
NHTSA New Car Assessment Program. Standard driver-assist: forward collision warning, lane departure warning, automatic emergency braking.
Service bulletins & campaigns
Source: NHTSA manufacturer communications- 15 years or 150,000 miles, whichever comes first · GM service campaign N252508350Certain vehicles listed above, may have a condition that could cause the engine coolant thermostat to open at a lower temperature than intended.
- Term not in NHTSA’s summary · GM warranty extension 22-NA-244This warranty administration service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warranty Coverage Period.
- 15 years or 150,000 miles, whichever comes first · GM warranty extension N242441120Certain vehicles, equipped with a 2.0 gasoline engine (RPO LSY), may have a condition that could cause the evaporative emissions purge pump to fail.
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 GM warranty extension (33) → · Every warranty extension on file, all makes →
Most often about: Equipment, Engine, Electrical System, Power Train, Unknown Or Other.
- PIT5698F Service bulletin2026-09-26 · Unknown Or Other
- This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
- PIP4902W Service bulletin2026-09-04 · Unknown Or Other
- This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
- PIC6551C Service bulletin2026-08-20 · Unknown Or Other
- This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
- PIT5099J Service bulletin2026-07-21 · Unknown Or Other
- PI to help diagnose A/C concern
- PIT5855K Service bulletin2026-07-06 · Unknown Or Other
- This Preliminary information communicates that a vehicle may be encountered with the heated/ventilated seats inoperative. Upon further inspection it will be found that the F19DA fuse will be open. The technician is instructed to inspect the wiring harness that goes to the passenger seat back blower motor for chaffing on the seat frame. If chaffing is found the technician is instructed to repair th
- PIT5966F Service bulletin2026-06-23 · Unknown Or Other
- This Preliminary information communicates an issue with an OTA pending message still displayed after an OTA event and how to reset/clear the message.
- PIC6423A Service bulletin2026-05-11 · Unknown Or Other
- Pi created to provide GM dealers with information on gathering information for projection issue
- PIC6551B Service bulletin2026-05-11 · Unknown Or Other
- This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
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 |
|---|---|---|---|
| P0300 P0300 on Cadillac → | Misfire detected, but not isolated to one cylinder. | Engine · Ignition coils → | 8 bulletins |
| P04FB P04FB on Cadillac → | Manufacturer-defined — the meaning is set by the automaker, not the standard. | Engine | 8 bulletins |
| P023F P023F on Cadillac → | Manufacturer-defined — the meaning is set by the automaker, not the standard. | Electrical System · Battery → | 7 bulletins |
| P129F P129F on Cadillac → | Manufacturer-defined — the meaning is set by the automaker, not the standard. | Electrical System · Battery → | 7 bulletins |
| C056D C056D on Cadillac → | Manufacturer-defined — the meaning is set by the automaker, not the standard. | Parking Brake · Parking brake cable → | 5 bulletins |
| B3055 B3055 on Cadillac → | Manufacturer-defined — the meaning is set by the automaker, not the standard. | Power Train | 4 bulletins |
| B3060 B3060 on Cadillac → | Manufacturer-defined — the meaning is set by the automaker, not the standard. | Power Train | 4 bulletins |
| B3935 B3935 on Cadillac → | Manufacturer-defined — the meaning is set by the automaker, not the standard. | Power Train | 4 bulletins |
| P0016 P0016 on Cadillac → | The crankshaft and camshaft are not where they should be relative to each other — timing, chain or phaser. | Equipment | 4 bulletins |
| P0018 P0018 on Cadillac → | Manufacturer-defined — the meaning is set by the automaker, not the standard. | Equipment | 4 bulletins |
| P0308 P0308 on Cadillac → | Cylinder 8 is misfiring. | Engine · Ignition coils → | 4 bulletins |
| P050D P050D on Cadillac → | Manufacturer-defined — the meaning is set by the automaker, not the standard. | Engine | 4 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.
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 2021 Cadillac XT6 failed the emissions check on 3.0% of first inspections — higher than the 1.9% for every 2021 model-year vehicle inspected; and the safety inspection on 0.54% (every 2021 vehicle: 1.5%).
failed emissions
740 initial inspections of 728 vehicles.
| Measure | The 2021 XT6 | Every 2021 vehicle | Behind it |
|---|---|---|---|
| Failed the emissions check | 3.0% | 1.9% | 739 |
| Failed the safety inspection | 0.54% | 1.5% | 740 |
| Air-bag warning lamp stayed lit | 0% | 0.19% | 740 |
| Miles driven a year | 10,248 | 10,343 | odometer at inspection |
| Average odometer | 54,385 | 54,681 | 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 2021 vehicle” is every 2021 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).
XT6 by model year
all years, side by side →Common questions about the 2021 XT6
Source: EPA, NHTSA and manufacturer press kitsDoes the 2021 Cadillac XT6 have any recalls?
NHTSA has posted 2 recall campaigns for the 2021 Cadillac XT6. The most serious on file is 21V422000, covering Fuel System, Gasoline. Check your own VIN at nhtsa.gov/recalls; a recall applies to specific build ranges, not every car.
How safe is the 2021 Cadillac XT6?
NHTSA gave the 2021 Cadillac XT6 5 stars overall in its New Car Assessment Program tests — 5-star frontal crash, 5-star side crash, 4-star rollover. WhichTrim also grades it B (87/100) on its recall record, which is a different question from crash protection.
What is the fuel economy of the 2021 Cadillac XT6?
Across the 4 EPA-rated configurations of the 2021 Cadillac XT6, the best EPA combined figure is 23 mpg. Figures are the EPA's own, per configuration, and every one is listed above.
What are the dimensions of the 2021 Cadillac XT6?
Transport Canada measured it at 198.8 in long, 77.2 in wide (body, without mirrors), 68.9 in tall, on a 112.6 in wheelbase. Curb weight: 4,689 lb. Those are its measurements of the North American versions; every figure is in the table above.
What do owners complain about on the 2021 Cadillac XT6?
Owners have filed 21 complaints with NHTSA about the 2021 Cadillac XT6, most often about engine, 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 2021 Cadillac XT6?
The EPA smog rating for the 2021 Cadillac XT6 runs 6 to 7 out of 10 across its configurations. 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-III SULEV30, California LEV-III ULEV50, Federal Tier 3 Bin 30, Federal Tier 3 Bin 50 — which the table above lists per configuration.
Are there service bulletins for the 2021 Cadillac XT6?
The manufacturer has filed 814 service bulletins and related communications with NHTSA for the 2021 Cadillac XT6, most often covering equipment, engine, electrical system. The most recent is dated 2026-09-26. 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 2021 Cadillac XT6 do at state inspection?
In New York’s inspection lanes over the 12 months to Oct 10, 2026, the 2021 Cadillac XT6 failed the emissions check on 3.0% of first inspections — higher than the 1.9% for every 2021 model-year vehicle inspected; and the safety inspection on 0.54% (every 2021 vehicle: 1.5%). 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 | 4 configurations | EPA certification records | Every configuration the EPA certified for sale, with its own test figures. |
| Emission certificates | 4 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 | 21 | NHTSA complaint database | Also complete, but unverified: these are reports owners filed, not findings. Counts scale with how many were sold. |
| Crash ratings | 2 tested | NHTSA NCAP | Only the configurations NHTSA chose to crash-test, which is never all of them. |
| Service bulletins | 814 | 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 | 12 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.