2018 Cadillac Ats: Problems & Reliability
SOLID2018 Cadillac ATS: SOLID — 22 owner complaints, a typical complaint rate for ~8 years on the road; top issue: powertrain / transmission (7 complaints).
CarWhere's verdict score for the 2018 is 0.96, where 1.00 is a typical ATS year once complaints are weighted for severity and spread over time on the road, between the best line (0.75) and caution (1.25). 52% of its complaints are severe — a crash, fire, injury or a safety-critical system.
Sources: NHTSA owner complaints (ODI), recall campaigns and manufacturer service bulletins, CarWhere verified buyer prices · Model years 2013–2019 compared · Updated 2026-11-07 · By CarWhere Research · Methodology
22
NHTSA complaints
0.96
Verdict score (1.00 = typical ATS year)
1,052
Service bulletins
2
Recall campaigns
Most-reported 2018 Cadillac ATS problems
Powertrain / transmission is the clear leader, named in 32% of complaints.
| Component | Complaints | Share of 2018 complaints |
|---|---|---|
| Powertrain / transmission | 7 | 32% |
| Electrical system | 3 | 14% |
| Steering | 3 | 14% |
| Fuel / propulsion system | 2 | 9% |
| Unknown or other | 2 | 9% |
A complaint can name more than one component, so shares can add up to more than 100%.
2018 Cadillac ATS recalls
2 recall campaigns on federal record for the 2018, reported between May 31, 2018 and Mar 20, 2025.
2018 Cadillac ATS service bulletins
The manufacturer has filed 1,052 technical service bulletins with NHTSA for the 2018 — fewer than the 1,535 of the median ATS year from 2013 to 2019. Coded bulletins most often cover electrical system (203), engine & cooling (147), powertrain / transmission (131). Bulletins are repair instructions for dealer technicians, not recalls.
The 2018 vs. the year before and after
From the 2017 to the 2018, owner complaints fell 33% (33 → 22) — an improvement. The 2019 that followed fell by more than half (22 → 2), so the 2019 has the lighter record so far.
| Model year | Verdict | Complaints | Bulletins | Recalls | Avg. buyer-paid |
|---|---|---|---|---|---|
| 2017 ATS | SOLID | 33 | 1,295 | 2 | — |
| 2018 (this page) | SOLID | 22 | 1,052 | 2 | — |
| 2019 ATS | TOO FEW REPORTS | 2 | 774 | 0 | — |
Prices are averages of CarWhere verified buyer transactions (shown when 3+ deals exist for the year). Full year-by-year table: Cadillac ATS years to avoid.
What to check on a used 2018 Cadillac ATS
Powertrain / transmission (7 complaints on the 2018): test-drive from cold through every gear and feel for slipping, harsh or delayed shifts and shudder; ask whether the transmission fluid has been serviced.
Electrical system (3 complaints on the 2018): test every light, window, lock, the infotainment screen and the charging system, and have the car scanned for stored fault codes.
Steering (3 complaints on the 2018): check for a steering warning light, heavy or notchy steering at parking speed, and clunks over bumps.
Fuel / propulsion system (2 complaints on the 2018): smell for fuel around the car, watch for hesitation or stalling, and check for a lit check-engine light.
Air bags (2 complaints on the 2018): confirm the air bag warning light goes out after start-up and that every air bag recall was completed on this VIN.
Recalls: confirm all 2 campaigns above were completed on this VIN.
Know what to pay for the right 2018 Cadillac Ats — then negotiate it
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FAQ
Is the 2018 Cadillac ATS reliable?
2018 Cadillac ATS: SOLID — 22 owner complaints, a typical complaint rate for ~8 years on the road; top issue: powertrain / transmission (7 complaints). CarWhere's verdict score for the 2018 is 0.96, where 1.00 is a typical ATS year once complaints are weighted for severity and spread over time on the road, between the best line (0.75) and caution (1.25).
What are the most common 2018 Cadillac ATS problems?
By NHTSA owner complaints, the most-reported areas on the 2018 Cadillac ATS are powertrain / transmission (7, 32%), electrical system (3, 14%), steering (3, 14%). The manufacturer has 1,052 service bulletins on file for this model year.
How many recalls does the 2018 Cadillac ATS have?
2 recall campaigns on federal record for the 2018 Cadillac ATS, most recently 25V175000 (Mar 20, 2025, steering); 18V358000 (May 31, 2018, fuel system, gasoline). Recall completion is VIN-specific, so check the exact car.
How do I check a specific 2018 Cadillac Ats before buying?
Decode the VIN free at carwhere.com/tools/vin-decoder to confirm the build, then run the $9.99 CarWhere Full VIN Report for the exact VIN — recall, complaint, and service-bulletin record for this model year, the original window sticker where the manufacturer publishes one, and a market price check from verified buyers. One-time purchase, no subscription.
Sources & method
Complaint, recall and service-bulletin counts for the 2018 Cadillac ATS come from NHTSA's Office of Defects Investigation; the verdict is CarWhere’s severity-weighted, time-on-road-adjusted score compared with the model’s own median year. Complaints are owner allegations, not verified defects. Full methodology.