2018 Buick Enclave: Problems & Reliability
SOLID2018 Buick Enclave: SOLID — 66 owner complaints (1.33 per 1,000 sold), a typical complaint rate for ~8 years on the road; top issue: service brakes (21 complaints).
CarWhere's verdict score for the 2018 is 0.90, where 1.00 is a typical Enclave year once complaints are weighted for severity and spread over time on the road, between the best line (0.75) and caution (1.25). Severity drives it: 80% of those complaints report a crash, fire or injury or involve a safety-critical system (engine, powertrain, steering, brakes or fuel). The raw count looks high, but the 2018 has had about 8 years on the road to collect complaints; per year on the road it is in line with or better than the rest of the Enclave.
Sources: NHTSA owner complaints (ODI), recall campaigns and manufacturer service bulletins, published U.S. sales, CarWhere verified buyer prices · Model years 2015–2026 compared · Updated 2026-11-07 · By CarWhere Research · Methodology
66
NHTSA complaints
1.33
Complaints per 1,000 sold
1,025
Service bulletins
0
Recall campaigns
Most-reported 2018 Buick Enclave problems
Service brakes is the clear leader, named in 32% of complaints.
| Component | Complaints | Share of 2018 complaints |
|---|---|---|
| Service brakes | 21 | 32% |
| Powertrain / transmission | 16 | 24% |
| Engine | 13 | 20% |
| Electrical system | 10 | 15% |
| Unknown or other | 8 | 12% |
A complaint can name more than one component, so shares can add up to more than 100%.
2018 Buick Enclave recalls
No recall campaigns are on federal record for the 2018 Buick Enclave.
2018 Buick Enclave service bulletins
The manufacturer has filed 1,025 technical service bulletins with NHTSA for the 2018 — more than the 703 of the median Enclave year from 2015 to 2026. Coded bulletins most often cover electrical system (210), engine & cooling (130), powertrain / transmission (111). 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 (179 → 66) — an improvement. The 2019 that followed fell 32% (66 → 45), so the 2019 has the lighter record so far.
| Model year | Verdict | Complaints | Bulletins | Recalls | Avg. buyer-paid |
|---|---|---|---|---|---|
| 2017 Enclave | SOLID | 179 | 1,002 | 3 | — |
| 2018 (this page) | SOLID | 66 | 1,025 | 0 | — |
| 2019 Enclave | SOLID | 45 | 766 | 1 | — |
Prices are averages of CarWhere verified buyer transactions (shown when 3+ deals exist for the year). Full year-by-year table: Buick Enclave years to avoid.
What to check on a used 2018 Buick Enclave
Service brakes (21 complaints on the 2018): check pedal feel, pulling and grinding, look at rotor and pad wear, and ask when the brake fluid was last changed.
Powertrain / transmission (16 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.
Engine (13 complaints 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.
Electrical system (10 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.
Fuel / propulsion system (5 complaints on the 2018): smell for fuel around the car, watch for hesitation or stalling, and check for a lit check-engine light.
Nearby Enclave years with a better rating: 2021.
Know what to pay for the right 2018 Buick Enclave — then negotiate it
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FAQ
Is the 2018 Buick Enclave reliable?
2018 Buick Enclave: SOLID — 66 owner complaints (1.33 per 1,000 sold), a typical complaint rate for ~8 years on the road; top issue: service brakes (21 complaints). CarWhere's verdict score for the 2018 is 0.90, where 1.00 is a typical Enclave 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 Buick Enclave problems?
By NHTSA owner complaints, the most-reported areas on the 2018 Buick Enclave are service brakes (21, 32%), powertrain / transmission (16, 24%), engine (13, 20%). The manufacturer has 1,025 service bulletins on file for this model year.
How many recalls does the 2018 Buick Enclave have?
No recall campaigns are on federal record for the 2018 Buick Enclave. Recall status is VIN-specific, so still check the exact car.
How do I check a specific 2018 Buick Enclave 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 Buick Enclave come from NHTSA's Office of Defects Investigation; the per-1,000 rate divides complaints by published U.S. 2018 calendar-year sales; 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.