The Lemon Index2025 GMC Sierra.
The 2025 GMC Sierra is so far better than average by owner complaints: 166 complaints in its first 3 years and a Lemon Index of 79, where 100 is the average car. Owners complain most about engine, it has 2 recalls, and it gets 15 to 26 mpg combined. The best GMC Sierra year is 2010.
Early read
Before you buy. What matters most for this car.
How serious. Out of 166 owner complaints, owners reported:
Every GMC Sierra year. 2025 is highlighted. Lower is better.
What owners complain about most. From owner complaints to the government.
Share of this year's owner complaints filed with NHTSA, not the share of cars that break. One complaint can name more than one area.
When owners reported problems. From owner complaints to the government.
Most owners who filed a complaint with NHTSA had 2K to 22K miles on the car (18 complaints listed the miles). This shows when people who had a problem reported it, not the odds that your car will have it.
Recalls 2
- tires 2026
The tire information label may state the incorrect rear tire pressure, resulting in underinflated tires and preventing the tire pressure monitoring system (TPMS) from displaying a low tire pressure warning.
- equipment adaptive/mobility 2025
Please refer to Rollx's recall report for specific model year information.
Recall repairs are free at any dealer. A recall only matters if it's still open on that exact car, so check its VIN.
Problems GMC told dealers about
GMC sent dealers 519 repair notes for this car. The ones about its biggest problems:
- This service bulletin explains how to measure for oil consumption and possible reasons for…
Ask a seller or mechanic if these were done. Some are free under warranty or a special program.
Government investigations
- OpenLoss of motive power due to engine failure post recall remedy2026
NHTSA looks into a problem when enough owners report it. Many end in a recall.
Safety
Crash test details
| Version | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| GMC Sierra 1500 PU/CC 4WD | ★★★★★ | ★★★★☆ | ★★★★★ | ★★★★☆ |
| GMC Sierra 1500 PU/CC RWD | ★★★★★ | ★★★★☆ | ★★★★★ | ★★★★☆ |
| GMC Sierra 1500 PU/EC 4WD | ★★★★★ | ★★★★★ | ★★★★★ | ★★★★☆ |
| GMC Sierra 1500 PU/EC RWD | ★★★★★ | ★★★★★ | ★★★★★ | ★★★★☆ |
| GMC Sierra 1500 PU/RC 4WD | ★★★★★ | ★★★★★ | ★★★★★ | ★★★★☆ |
| GMC Sierra 1500 PU/RC RWD | ★★★★★ | ★★★★★ | ★★★★★ | ★★★★☆ |
Fuel cost and engines
About $3400–5300 a year in fuel (EPA estimate). Engines: 2.7L 4-cyl, 3.0L 6-cyl, 5.3L 8-cyl, 6.2L 8-cyl.
In owners' words
Confirmed as catastrophic engine failure by dealership. New engine has been ordered.
2025 GMC Sierra owner · NHTSA complaint 11760443
More owner reports
I was driving on a pa road at about 30 mph. My car stopped immediately and I heard the motor rev. The car then slammed into a stop.
NHTSA complaint 11658783
I bought a brand-new GMC 1500 6.2L AT4 back in 2025. Never have an engine recall. At 39K miles, lost power, and ended up replacing the camshaft and lifters. 2K miles later went back to the dealer for engine replacement.
NHTSA complaint 11732418
Quick answers
Is the 2025 GMC Sierra reliable?
It's too early to be sure. So far it has drawn 1.3× fewer complaints than average per car sold, against other 2025 cars after the same time on the road (early Lemon Index 79; 100 is average). The best GMC Sierra year by this measure is 2010.
What are the most common 2025 GMC Sierra problems?
In owner complaints to the government, the parts named most are engine (37%), transmission & drivetrain (19%) and electrical (18%). That is the share of complaints, not the share of cars that break.
How many recalls does the 2025 GMC Sierra have?
2 safety recalls (latest: tires). Recall repairs are free at any dealer; check a specific car's VIN at nhtsa.gov/recalls.
What gas mileage does the 2025 GMC Sierra get?
15 to 26 mpg combined, depending on the engine (EPA estimate).
Is the 2025 GMC Sierra safe?
NHTSA gave it 5 out of 5 stars overall in its best tested version. Ratings differ by body style, and the full table is on the advanced page.
Does the 2025 GMC Sierra have transmission problems?
Transmission and drivetrain issues make up 19% of its owner complaints.
How much does the 2025 GMC Sierra cost in fuel a year?
About $3400 to $5300 a year, by the EPA's current estimate.
What engines does the 2025 GMC Sierra have?
2.7L 4-cyl, 3.0L 6-cyl, 5.3L 8-cyl, 6.2L 8-cyl.
What GMC Sierra year is better than the 2025?
By owner complaints per car sold, the best recent years are 2010, 2012 and 2013.
Lemon Index = safety complaints filed with the U.S. government (NHTSA) in a car's first 3 years, per car sold, against the average car of the same model year. 100 is average; lower is better. A complaint is an owner's report, not a confirmed defect. How it works