Research · Midsize Cars

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.

Combined MPG
28mpg
EPA · 1 version
NHTSA overall
5of 5 stars
NCAP crash tests
Safety recalls
0campaigns
NHTSA
Owner complaints
33
Top: engine
Fuel cost / yr
$2,150est.
EPA estimate, best version
01 —Recalls

Safety recalls

NHTSA campaigns for this model year
0 recalls found in NHTSA data for the 2015 Buick Regal Eassist as of Nov 12, 2026.
Data from NHTSA Recalls API · synced Nov 12, 2026NHTSA vehicle page
02 —Complaints

Owner complaints by component

33 complaints filed with NHTSA · Aug 2015 – Jul 2024
  1. Engine9
  2. Exterior lighting8
  3. Electrical system5
  4. Fuel/propulsion system4
  5. Air bags3
  6. Service brakes2
  7. Seat belts2
  8. Wheels2
  9. 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.

By model year

Complaints for each Regal Eassist model year we’ve synced.

View as table
Model yearNHTSA complaints
201290
201388
201436
201533
201640
Crashes reported
1
Fires reported
1
Injuries reported
3
Deaths reported
0
Data from NHTSA Complaints API · synced Nov 12, 2026 · Full problem breakdownNHTSA vehicle page
03 —Common problems

What owners report most

Verbatim excerpts from NHTSA complaints, by component

Engine

9 reports1 fire
“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.”
Owner complaint to NHTSAFiled Jul 26, 2024EngineODI 11604819

Exterior lighting

8 reports
“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.”
Owner complaint to NHTSAFiled Oct 25, 2022Exterior lightingODI 11490719

Electrical system

5 reports
“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”
Owner complaint to NHTSAFiled Jul 12, 2019Electrical system, Latches/locks/linkagesODI 11231421
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 12, 2026
04 —Key specs

Engines, transmissions & drive

1 version rated by the EPA
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.

Data from EPA fueleconomy.gov · synced Nov 12, 2026EPA listing
05 —Fuel economy

EPA fuel economy by version

City / highway / combined, annual fuel cost and CO₂
EPA
VersionCityHwyComb.Fuel / yrCO₂ g/mi
Regal eAssist
Auto (S6), 4 cyl, 2.4 L · Front-Wheel Drive
243528$2,150314
  • Regal eAssist
    Auto (S6), 4 cyl, 2.4 L
    24 city · 35 hwy · $2,150/yr
    28
    mpg comb.
Data from EPA fueleconomy.gov · synced Nov 12, 2026 · Fuel cost is EPA’s annual estimate (15,000 mi, 55% city)
06 —Safety

NHTSA 5-Star Safety Ratings

1 tested variant
Overall rating
5/ 5
5 of 5
Buick Regal eAssist 4 DR FWD
Frontal crash
4 of 5
Side crash
5 of 5
Side pole
5 of 5
Rollover
4 of 5
Rollover risk
10.9%
Data from NHTSA NCAP Safety Ratings API · synced Nov 12, 2026Vehicle 9036
07 —Maintenance

Maintenance basics

General guidance, not the OEM schedule. Check your owner’s manual.
General guidance
ItemMilesTimeNote
Engine oil & filter5,000–10,000 mi6–12 monthsFollow the oil-life monitor if fitted
Tire rotation5,000–7,500 miEvery oil changeCheck pressure monthly
Engine air filter15,000–30,000 mi1–2 yearsSooner in dusty areas
Cabin air filter15,000–25,000 mi1–2 years
Brake fluid—2–3 yearsAbsorbs moisture over time
Coolant60,000–100,000 mi5–10 yearsLong-life coolants last longer
Spark plugs60,000–100,000 mi—Iridium/platinum plugs at the long end
12V battery—3–5 yearsHeat 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
Typical intervals for modern cars. Severe service (towing, short trips, extreme heat or cold) shortens them.
09 —FAQ

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.

Data from NHTSA & EPA · synced Nov 12, 2026