2018 Cadillac Cts: Problems & Reliability
TOO FEW REPORTS2018 Cadillac CTS: TOO FEW REPORTS — 8 owner complaints; top issue: powertrain / transmission (3 complaints).
The verdict engine has only 8 complaints for the 2018 — under the 15-complaint floor — so it is not rated yet rather than called clean by silence.
Sources: NHTSA owner complaints (ODI), recall campaigns and manufacturer service bulletins, CarWhere verified buyer prices · Model years 2008–2019 compared · Updated 2026-11-07 · By CarWhere Research · Methodology
8
NHTSA complaints
12
Model years compared
1,085
Service bulletins
2
Recall campaigns
Most-reported 2018 Cadillac CTS problems
Powertrain / transmission is the clear leader, named in 38% of complaints.
| Component | Complaints | Share of 2018 complaints |
|---|---|---|
| Powertrain / transmission | 3 | 38% |
| Electrical system | 3 | 38% |
| Air bags | 1 | 13% |
| Unknown or other | 1 | 13% |
| Engine | 1 | 13% |
A complaint can name more than one component, so shares can add up to more than 100%.
2018 Cadillac CTS recalls
2 recall campaigns on federal record for the 2018, reported between Feb 7, 2019 and Mar 20, 2025.
2018 Cadillac CTS service bulletins
The manufacturer has filed 1,085 technical service bulletins with NHTSA for the 2018 — fewer than the 1,480 of the median CTS year from 2008 to 2019. Coded bulletins most often cover electrical system (206), engine & cooling (159), powertrain / transmission (130). 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 by more than half (27 → 8) — an improvement. The 2019 that followed rose 25% (8 → 10), so the 2018 is the cleaner of the two by count.
| Model year | Verdict | Complaints | Bulletins | Recalls | Avg. buyer-paid |
|---|---|---|---|---|---|
| 2017 CTS | BEST | 27 | 1,392 | 2 | — |
| 2018 (this page) | TOO FEW REPORTS | 8 | 1,085 | 2 | — |
| 2019 CTS | TOO FEW REPORTS | 10 | 827 | 0 | — |
Prices are averages of CarWhere verified buyer transactions (shown when 3+ deals exist for the year). Full year-by-year table: Cadillac CTS years to avoid.
What to check on a used 2018 Cadillac CTS
Powertrain / transmission (3 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.
Air bags (1 complaint 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.
Engine (1 complaint on the 2018): cold-start it yourself and listen for ticking or knocking; check for oil leaks, low coolant and a lit check-engine light, and ask for oil-change records.
Exterior lighting (1 complaint on the 2018): check low and high beams, brake lights and turn signals, and look for condensation inside the housings.
Recalls: confirm all 2 campaigns above were completed on this VIN.
Nearby CTS years with a better rating: 2017.
Know what to pay for the right 2018 Cadillac Cts — then negotiate it
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FAQ
Is the 2018 Cadillac CTS reliable?
2018 Cadillac CTS: TOO FEW REPORTS — 8 owner complaints; top issue: powertrain / transmission (3 complaints). The verdict engine has only 8 complaints for the 2018 — under the 15-complaint floor — so it is not rated yet rather than called clean by silence.
What are the most common 2018 Cadillac CTS problems?
By NHTSA owner complaints, the most-reported areas on the 2018 Cadillac CTS are powertrain / transmission (3, 38%), electrical system (3, 38%), air bags (1, 13%). The manufacturer has 1,085 service bulletins on file for this model year.
How many recalls does the 2018 Cadillac CTS have?
2 recall campaigns on federal record for the 2018 Cadillac CTS, most recently 25V175000 (Mar 20, 2025, steering); 19V086000 (Feb 7, 2019, steering). Recall completion is VIN-specific, so check the exact car.
How do I check a specific 2018 Cadillac Cts 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 CTS 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.