2018 Cadillac ATS problems and complaints
Owners have filed 21 complaints with NHTSA about the 2018 Cadillac ATS. The most-reported areas: Power Train (6), Electrical System (3), Steering (3).
Key takeaways
- 21 owner complaints on file with NHTSA.
- 1 involve a crash, 0 a fire, 1 reported injury.
- Complaints are unverified owner reports; recalls are confirmed defects.
| Component | Complaints | Share |
|---|---|---|
| Power Train | 6 | 29% |
| Electrical System | 3 | 14% |
| Steering | 3 | 14% |
| Fuel/Propulsion System | 2 | 10% |
| Unknown Or Other | 2 | 10% |
| Air Bags | 2 | 10% |
| Exterior Lighting | 2 | 10% |
| Structure | 1 | 5% |
| Suspension | 1 | 5% |
| Tires | 1 | 5% |
| Equipment | 1 | 5% |
| Engine | 1 | 5% |
One complaint can name several components, so shares add up to more than 100%.
| Version | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| 2018 Cadillac ATS 2DR RWD | Not rated | Not rated | Not rated | Not rated |
| 2018 Cadillac ATS 2DR AWD | Not rated | Not rated | Not rated | Not rated |
| 2018 Cadillac ATS 4 DR AWD | 5/5 | 5/5 | 5/5 | 5/5 |
| 2018 Cadillac ATS 4 DR RWD | 5/5 | 5/5 | 5/5 | 5/5 |
Latest complaints, as filed
Owner-written and unverified by NHTSA.
Structure - filed 2026-05-12
Both side mirrors failed. Internal components corroded, one almost fell off when driving, the other later became completely detached. Failed parts that could have caused a major safety issue if they were to fail during operation.
Electrical System - filed 2025-12-22
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 engine Auto START/STOP, needed to be replaced....
Power Train - filed 2025-07-11
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 replaced." There were no warning lights, b...
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More for the 2018 Cadillac ATS
Complaints are reports filed by owners with the National Highway Traffic Safety Administration. NHTSA publishes them without verifying them, and counts rise with how many cars were sold, so compare years of the same model rather than different models. Crash ratings are NHTSA's own 5-Star Safety Ratings results.