YearToAvoid

2011 Buick Regal Engine Problems

NHTSA lists 120 Engine complaints for the 2011 Buick Regal, 43% of all 279 complaints filed for the year, the highest share of any model year. Median mileage at failure is 69,579 miles. No related recalls are listed for this engine problem area.

Engine complaints
120
43% of 279
Crashes reported
4
Fires reported
1
Injuries reported
3
Median mileage
69,579 mi
Related recalls
0

Typical engine symptoms owners report

  • Owners report sudden unintended acceleration at very low speeds, such as while pulling into a parking space, sometimes ending in a collision.
  • Some describe a loss of engine power followed by sparks and smoke from under the hood, with the vehicle catching fire after stalling.
  • Several report the engine stalling repeatedly, including a case with five separate stalling incidents that required towing after a failed restart.
  • Owners describe an intermittent noise from the passenger side of the engine compartment traced to the belt tensioner, which recurred after replacement.
  • Some received notice about a timing chain that could break and damage the engine, with dealers reportedly waiting for failure before acting.
  • A few report the service engine light coming on repeatedly with no diagnosis or repair from the dealer, and the code simply being cleared.

When 2011 Buick Regal engine complaints were filed

First complaint Oct 18, 2011, latest May 13, 2026.

2011 Buick Regal engine complaints: complaints filed per quarter72011 Q42014 Q32016 Q22017 Q32018 Q42020 Q32021 Q42026 Q2
120 complaints filed with NHTSA from 2011 Q4 to 2026 Q2; peak 2018 Q1 (7).

Engine recalls for the 2011 Buick Regal

No safety recalls on record for this model year.

Engine complaints by Regal model year

Raw complaint counts per model year; newer years have had less time to accumulate complaints.

  1. 20101 (100%)
  2. 2011120 (43%)
  3. 201225 (27%)
  4. 201317 (19%)
  5. 201410 (26%)
  6. 20159 (27%)
  7. 20168 (20%)
  8. 20170 (0%)
  9. 20187 (37%)
  10. 20193 (16%)
  11. 20200 (0%)

Frequently asked questions

How many engine complaints does the 2011 Buick Regal have?
NHTSA lists 120 Engine complaints for the 2011 Buick Regal, which is 43% of the 279 total complaints filed for that model year.
Is there a recall for the 2011 Buick Regal engine problems?
No related recalls are listed in NHTSA data for this engine problem area on the 2011 Buick Regal.
At what mileage do 2011 Buick Regal engine problems typically show up?
The median mileage at failure reported to NHTSA for this engine problem area is 69,579 miles.
Does the engine issue involve crashes or fires?
NHTSA data for this problem area lists 4 crashes, 1 fire, and 3 injuries among the 120 engine complaints for the 2011 Buick Regal.
How does 2011 compare to other Regal model years for engine complaints?
The 2011 Regal's engine complaints make up 43% of its total complaints, higher than every other year listed, including 27% for 2012 and 19% for 2013.

Sources: NHTSA Office of Defects Investigation complaint and recall databases; U.S. EPA fuel economy data; NHTSA 5-Star Safety Ratings. Complaints are unverified owner reports.

Data updated Sep 24, 2026. Read the methodology and data sources. The Complaint Index is based on NHTSA owner complaints and recalls; it is not a reliability rating.