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ProblemsByVinFile / 2018-CADILLAC-ATSNHTSA data synced 1 day ago
Cadillac
2018 Cadillac ATS problems
Light NHTSA footprint — 21 owner complaints and 2 active recall campaigns. Either a clean record or thin data; we'll show what's there.
The 2018 Cadillac ATS has 21 NHTSA owner complaints and 2 recalls on file (U.S. federal records, as of August 2026). The most-reported system is powertrain at 6 complaints, typically surfacing around 84,000 miles (~$2,500 to repair). Source: NHTSA Office of Defects Investigation.
Solid reliability overall. Common issues are concentrated in a few systems.
0
Critical
2
Severe
0
Moderate
Should you avoid this 2018 ATS?
Generally reliable
Buyable on the data — keep up the usual maintenance and inspect normally.
No systemic severe-failure pattern in the complaint record
Reliability score 8.2/10 — above the segment average
2 recall campaigns on file
Our read of the federal NHTSA complaint and recall record for this exact year and model —
not a substitute for a pre-purchase inspection. How we score.
NHTSA crash-test safety ratings
5 / 5 overall
Overall★★★★★5/5
Frontal crash★★★★★5/5
Side crash★★★★★5/5
Rollover★★★★★5/5
Driver-assist features on the tested model:
Electronic stability control: Standard · Forward collision warning: Optional · Lane departure warning: Optional
Source: NHTSA New Car Assessment Program — tested configuration: 2018 Cadillac ATS 4 DR AWD. Stars rate crash protection in NHTSA's tests, not overall reliability — see the owner-complaint data below for what actually goes wrong.
Buying a used 2018 Cadillac ATS? Check these first
Here's what this model is known to do — so you can inspect for it, price it in, or
make the seller fix it before you sign.
What to inspect on this specific car
powertrain — 6 owner reports
· tends to show around 84,000 mi · ~$2,500 to fix
electrical — 3 owner reports
· tends to show around 25,764 mi · ~$850 to fix
steering — 3 owner reports
· tends to show around 24,271 mi · ~$700 to fix
Recalls to confirm are done
Run the VIN from the listing — 2 active recalls on this model. Recall repairs are always free.
Verdict for buyers: 8.2/10 model. The priciest documented failure is
powertrain (~$2,500) — get the
seller's service records for it or inspect closely. Otherwise an average-risk used buy at a fair price.
We tell you what this model is known for and what to inspect — a vehicle-history report
tells you what this exact car has been through. Smart buyers get both.
A noise, a warning light, a repair quote, "should I buy this?" — get an answer grounded in
this vehicle's actual NHTSA record, not generic advice.
Dash light, leak, worn part — snap it and we'll read it against this car's record.
Photo attached — type a question or just hit Ask.
Answers use this vehicle's NHTSA complaint & recall record — owner-reported and unverified, not a diagnosis. Verify anything safety-critical with a mechanic.
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What owners are saying
recent NHTSA-filed complaints · verbatim
2018 ATS· electrical
The contact owns a 2018 Cadillac ATS. The contact stated that the check engine warning light was illuminated. The vehicle was taken to an independent mechanic, where it was diagnosed, and the mechanic determined that the F-module, Part Number: 86815664, used to control the…
The contact owns a 2018 Cadillac ATS. The contact stated while driving at undisclosed speeds, there was an abnormal growling sound coming from the vehicle. The contact looked underneath the vehicle, checked the tires, and checked the inside of the vehicle but found no failure.…
Rear differential. This part will be available after removal. This put me at risk of potentially locking up while driving. According to the dealership, Faulkner Cadillac, "found rear differential bearings damaged, causing noise in the rear end. The Rear Differential will need…
Had a problem with your 2018 Cadillac ATS?
File a complaint with NHTSA → It's free and official — owner filings are what build the federal safety record behind this page.
Estimate your repair exposure
Drag to your current mileage. Numbers are derived from this vehicle's complaint history.
General Motors LLC (GM) is recalling certain 2016-2018 Cadillac CTS, 2017-2018 Cadillac ATS, Chevrolet Camaro, and Chevrolet Corvette vehicles
A loss of power steering assist can require greater steering effort, especially at low speeds, increasing the risk of a crash.
Fix: Dealers will replace the power steering gear assembly, free of charge. Owner notification letters were mailed April 15, 2025. Owners may contact Cadilac customer service at 1-800-333-4223 or Chevrolet customer service at 1-800-222-1020. GM's number for this recall is N252497020.
General Motors LLC (GM) is recalling certain 2015-2018 GMC Canyon, 2016-2017 Buick Envision, 2016-2018 Chevrolet Colorado and Malibu, 2017-2018 GMC Acadia, 2018 Buick LaCrosse, Cadillac ATS, Chevrolet Equinox, and GMC Terrain vehicles
A damaged fuel line can create a fuel leak, increasing the risk of a fire.
Fix: GM will notify owners, and dealers will replace the high pressure fuel pump, and high pressure fuel pipe, free of charge. The recall began July 2, 2018. Owners may contact Buick customer service at 1-800-521-7300, Cadillac customer service at 1-800-458-8006, Chevrolet customer service at 1-800-222-1020, or GMC customer service at 1-800-462-8782. GM's number for this recall is 18188.
Common questions
Is the 2018 Cadillac ATS reliable?
Mostly yes. With a reliability score of 8.2 out of 10 based on 21 owner complaints filed with NHTSA, the 2018 Cadillac ATS is generally a sound vehicle. The areas to watch are listed in the top problem section above — most are budget items, not deal-breakers.
Should you avoid the 2018 Cadillac ATS?
On the NHTSA data, the 2018 Cadillac ATS does not need avoiding. Buyable on the data — keep up the usual maintenance and inspect normally. The record behind that call: No systemic severe-failure pattern in the complaint record; Reliability score 8.2/10 — above the segment average; 2 recall campaigns on file. This is our read of the federal complaint and recall data — not a substitute for a pre-purchase inspection.
What should I check before buying a used 2018 Cadillac ATS?
Inspect the powertrain first — it's the most-reported issue on this model, with 6 owner complaints filed. Typical failure occurs around 84,000 miles. Average repair cost runs about $2,500 at an independent shop. Also confirm any open recalls have been completed by running the VIN, and ask for service records covering the problem areas listed above.
Is the 2018 Cadillac ATS a good used car to buy?
It scores 8.2 out of 10 on our NHTSA-based read of 21 owner complaints. The main thing to watch is powertrain. Typical failure occurs around 84,000 miles. Priced fairly and clean on inspection, it's a reasonable used buy. Our data covers what this model is known for — pair it with a vehicle-history report on the VIN to see what that specific car has been through.
What's the most common problem on the 2018 Cadillac ATS?
Based on NHTSA records, the most-reported issue is powertrain, with 6 complaints filed. Typical failure occurs around 84,000 miles. Average repair cost runs about $2,500 at an independent shop.
What's the most expensive thing that goes wrong?
The powertrain is one of the costlier repair items. Average repair cost runs about $2,500 at an independent shop. Typical failure occurs around 84,000 miles. Catching early warning signs can sometimes extend life by 20–30,000 miles.
How do I check if my Cadillac ATS has open recalls?
Paste your VIN into the decoder at the top of this page. We pull live from NHTSA, so you'll see exactly which campaigns apply to your vehicle and whether the dealer has logged the fix. Recall repairs are always free regardless of mileage or warranty status.
Is an extended warranty worth it on a 2018 Cadillac ATS?
Math is straightforward: a quality service contract runs $1,800–3,500 over 3 years. With 21 complaints on file and the costliest repair averaging $2,500, one major failure more than pays for it. The catch is reading the contract — many providers exclude wear items and require pre-authorization, so cheaper plans are not always better value.
Recall and complaint data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database, last synced 1 day ago. Verify the raw federal record at
nhtsa.gov/vehicle/2018/Cadillac/ATS.
Editorial commentary written by ProblemsByVin contributors and reviewed by ASE-certified mechanics.
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