2018 GMC Acadia problems
The 2018 GMC Acadia has 389 NHTSA owner complaints and no active recalls. Here's where owners say it breaks.
The 2018 GMC Acadia has 389 NHTSA owner complaints on file (U.S. federal records, as of July 2026). The most-reported system is powertrain at 155 complaints, typically surfacing around 42,560 miles (~$2,500 to repair). Source: NHTSA Office of Defects Investigation.
| Model year | Owner complaints | Recalls |
|---|---|---|
| 2015 Acadia | 260 | 0 |
| 2016 Acadia | 234 | 0 |
| 2017 Acadia | 701 | 1 |
| 2018 Acadia (this page) | 389 | 0 |
| 2019 Acadia | 374 | 0 |
| 2020 Acadia | 97 | 0 |
| 2021 Acadia | 145 | 2 |
Solid reliability overall. Common issues are concentrated in a few systems.
Worth owning if you verify the specific issues below before you buy.
- Reliability score 7.2/10 — around the segment average
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.
Buying a used 2018 GMC Acadia? 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 — 155 owner reports · tends to show around 42,560 mi · ~$2,500 to fix
- electrical — 70 owner reports · tends to show around 37,272 mi · ~$850 to fix
- steering — 24 owner reports · tends to show around 54,700 mi · ~$700 to fix
- brakes — 12 owner reports · tends to show around 47,667 mi · ~$450 to fix
⚠ The one to take seriously: steering is flagged severe on this model , showing up around 54,700 mi. Inspect it closely on a test drive.
Recalls to confirm are done
Run the VIN from the listing — no active recalls on this model right now, but confirm none were opened after this car was built.
Verdict for buyers: 7.2/10 model. The priciest documented failure is engine (~$3,100) — 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.
See the full pre-purchase inspection checklist →Ask anything about your 2018 GMC Acadia
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.
Answers use this vehicle's NHTSA complaint & recall record — owner-reported and unverified, not a diagnosis. Verify anything safety-critical with a mechanic.
Top trouble spots 8 categories with 3+ complaints
What owners are saying recent NHTSA-filed complaints · verbatim
My 2018 acadia keeps giving error message "shift to park" , it has drained my battery twice I had to get new one. In order to shut off error, I have to restart ignition and move shifter to drive or reverse several times before error message to shut off. At times the vehicle…
The contact owns a 2018 GMC Acadia. The contact stated that on three separate occasions while driving at undisclosed speeds, the gears inadvertently shifted from second gear to third gear and then to neutral. No warning lights were illuminated. The vehicle was taken to the…
Had to replace the shifter, harness, and parking assist module to the tune of $1569.00! When it was put into park the system would not acknowledge it was in park...therefore I could not lock the vehicle and an alarm kept going off. My Acadia only has 12,000 miles on it...NO…
2018 GMC acadia. The crossover (automatic gear shifter) is failing to recognize that it has been put into park, flashing a message on the dash instructing the driver to 'shift to park' even when the gear lever have already been moved to the 'p' position.
Estimate your repair exposure
Drag to your current mileage. Numbers are derived from this vehicle's complaint history.
Common questions
Is the 2018 GMC Acadia reliable?
Mostly yes. With a reliability score of 7.2 out of 10 based on 389 owner complaints filed with NHTSA, the 2018 GMC Acadia 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 GMC Acadia?
The 2018 GMC Acadia is acceptable, with specific caveats. Worth owning if you verify the specific issues below before you buy. The record behind that call: Reliability score 7.2/10 — around the segment average. 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 GMC Acadia?
Inspect the powertrain first — it's the most-reported issue on this model, with 155 owner complaints filed. Typical failure occurs around 42,560 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 GMC Acadia a good used car to buy?
It scores 7.2 out of 10 on our NHTSA-based read of 389 owner complaints. The main thing to watch is powertrain. Typical failure occurs around 42,560 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 GMC Acadia?
Based on NHTSA records, the most-reported issue is powertrain, with 155 complaints filed. Typical failure occurs around 42,560 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 42,560 miles. Catching early warning signs can sometimes extend life by 20–30,000 miles.
How do I check if my GMC Acadia 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 GMC Acadia?
Math is straightforward: a quality service contract runs $1,800–3,500 over 3 years. With 389 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.