2015 Buick Regal EassistRecalls, problems, MPG & safety
NHTSA lists 0 safety recalls and 33 owner complaints for the 2015 Buick Regal Eassist. Most complaints involve engine (9) and exterior lighting (8). The EPA rates it 28 mpg combined, and NHTSA gives it 5 stars overall.
Safety recalls
Owner complaints by component
- Engine9
- Exterior lighting8
- Electrical system5
- Fuel/propulsion system4
- Air bags3
- Service brakes2
- Seat belts2
- Wheels2
- Electronic stability control (esc)2
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
What owners report most
Engine
“The contact owns a 2015 Buick Regal. The contact stated while driving at an undisclosed speed, upon reaching a stop light, the vehicle inadvertently lost motive power and was able to restart. After restarting the vehicle, the vehicle returned to normal functionality, but the failure became a regular occurrence. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic, who was unable to determine the cause of the failure. The vehicle was not repaired. The vehicle was then taken to the dealer, who determined that the engine was experiencing a vacuum leak. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 102,000.”
Exterior lighting
“I purchased my 2015 buick in May of 2015. At about December of 2017 the drivers HID head light was breached and moisture crept in creating an inner fog and eventually a puddle of water. In the falloff 2018 the same thing happened on the passengers side. I've removed both head assemblies and tried to fix the problem with very little success. Now I am looking at replacing both lamp assemblies at a cost of $2200 not counting labor.”
Electrical system
“TL* THE CONTACT OWNS A 2015 BUICK REGAL. WHILE THE CONTACT WAS INSIDE THE VEHICLE, THE DRIVER'S SIDE DOOR LOCK WAS PRESSED, WHICH ACTIVATED THE ANTI-THEFT SYSTEM. THE DOORS WOULD NOT UNLOCK FROM THE INSIDE AND THE OCCUPANTS BECAME TRAPPED INSIDE THE VEHICLE FOR APPROXIMATELY 15 MINUTES BEFORE THE CONTACT WAS ABLE TO OPEN THE DOORS. AN UNKNOWN DEALER AND THE MANUFACTURER WERE NOTIFIED OF THE FAILURE, BUT NO ASSISTANCE WAS OFFERED. THE FAILURE MILEAGE WAS UNKNOWN. *JS”
Engines, transmissions & drive
- EPA class
- Midsize Cars
- Engines
- 2.4L 4-cyl hybrid
- Transmissions
- Automatic (S6)
- Drive
- Front-Wheel Drive
- Fuel
- Regular Gasoline
Towing, payload and dimensions aren’t in the EPA or NHTSA data, so we don’t list them.
EPA fuel economy by version
| Version | City | Hwy | Comb. | Fuel / yr | CO₂ g/mi |
|---|---|---|---|---|---|
| Regal eAssist Auto (S6), 4 cyl, 2.4 L · Front-Wheel Drive | 24 | 35 | 28 | $2,150 | 314 |
- 28mpg comb.
NHTSA 5-Star Safety Ratings
- Frontal crash
- 4 of 5
- Side crash
- 5 of 5
- Side pole
- 5 of 5
- Rollover
- 4 of 5
- Rollover risk
- 10.9%
Maintenance basics
| Item | Miles | Time | Note |
|---|---|---|---|
| Engine oil & filter | 5,000–10,000 mi | 6–12 months | Follow the oil-life monitor if fitted |
| Tire rotation | 5,000–7,500 mi | Every oil change | Check pressure monthly |
| Engine air filter | 15,000–30,000 mi | 1–2 years | Sooner in dusty areas |
| Cabin air filter | 15,000–25,000 mi | 1–2 years | |
| Brake fluid | — | 2–3 years | Absorbs moisture over time |
| Coolant | 60,000–100,000 mi | 5–10 years | Long-life coolants last longer |
| Spark plugs | 60,000–100,000 mi | — | Iridium/platinum plugs at the long end |
| 12V battery | — | 3–5 years | Heat shortens battery life |
- Engine oil & filter5,000–10,000 mi
6–12 months - Tire rotation5,000–7,500 mi
Every oil change - Engine air filter15,000–30,000 mi
1–2 years - Cabin air filter15,000–25,000 mi
1–2 years - Brake fluid—
2–3 years - Coolant60,000–100,000 mi
5–10 years - Spark plugs60,000–100,000 mi
— - 12V battery—
3–5 years
2015 Regal Eassist questions
How many recalls does the 2015 Buick Regal Eassist have?
0 recalls found in NHTSA data as of Nov 12, 2026.
What are the most common 2015 Buick Regal Eassist problems?
Owners filed 33 complaints with NHTSA. The most-cited components are engine (9), exterior lighting (8), electrical system (5). Complaints are unverified owner reports and aren't adjusted for how many cars were sold.
What MPG does the 2015 Buick Regal Eassist get?
The EPA rates the 2015 Buick Regal Eassist at 28 mpg combined, depending on engine and drivetrain (1 version rated).
How safe is the 2015 Buick Regal Eassist?
NHTSA's New Car Assessment Program gives the 2015 Buick Regal Eassist 5 out of 5 stars overall.