2011 Buick Regal Engine Problems

Source: NHTSA · Updated Sep 28, 2026 · 108 complaints analyzed

Owners have filed 108 complaints with NHTSA about engine problems on the 2011 Buick Regal, 39% of all complaints for this model year. Half of the reports with a mileage happened before 70,000 miles. The words owners use most often: “timing chain” (21% of reports).

What owners describe

Phrases that appear unusually often in these complaints compared with complaints about other cars.

  • Timing chain: mentioned in 23 of 108 complaints (21%)
  • Oil consumption: mentioned in 10 of 108 complaints (9%)
  • Engine power: mentioned in 9 of 108 complaints (8%)
  • Throttle body: mentioned in 7 of 108 complaints (6%)

At what mileage do engine problems happen?

Based on 94 complaints that reported the odometer reading.

Under 10k miles5 · 5%
10k–25k miles6 · 6%
25k–50k miles15 · 16%
50k–75k miles27 · 29%
75k–100k miles20 · 21%
100k–150k miles16 · 17%
150k+ miles5 · 5%

How serious are the reports?

Of 108 complaints, 2 mention a crash, 1 a fire, 2 an injury.

Buick Regal engine complaints by model year

Peak: 2011, with 108 complaints
1995: 119951996: 21997: 1119971998: 291999: 4919992000: 282001: 5220012002: 332003: 2620032004: 182005: 120052009: 12010: 120102011: 1081082012: 2120122013: 92014: 920142015: 92016: 520162018: 52019: 32019

n = 421 complaints · Source: NHTSA

Model yearEngine complaintsShare of that yearMedian miles
2019 Regal316%22,301
2018 Regal526%22,000
2016 Regal512%38,500
2015 Regal927%54,000
2014 Regal924%69,381
2013 Regal910%80,645
2012 Regal2123%73,000
2011 Regal10839%70,000
2010 Regal1100%13,000
2009 Regal1100%—
2005 Regal125%45
2004 Regal1827%97,650
2003 Regal2626%142,000
2002 Regal3328%135,500
2001 Regal5228%122,500
2000 Regal2815%140,000
1999 Regal4920%139,000
1998 Regal2910%128,000
1997 Regal118%144,000
1996 Regal21%216,628
1995 Regal11%110,000

When owners reported it

Peak: 2017, with 18 complaints
2013: 2201322014: 5201452015: 132015132016: 132016132017: 182017182018: 172018172019: 152019152020: 112020112021: 8202182023: 3202332024: 1202412025: 1202512026: 120261

n = 108 complaints · Source: NHTSA

Related recalls (0)

No safety recall lists engine for the 2011 Buick Regal. A pattern of complaints does not always lead to a recall.

What owners report

Short excerpts of recent complaints, with personal details removed. Full reports are on NHTSA.gov.

While driving on the highway at 60 mph, warning on dash came on saying “engine power reduced” and drop down speed to around 25 mph and I could not accelerate more than 25 mph on the highway which could have caused an accident because of the traffic flow behind me. I put a code scanner under the…

Received May 13, 2026 · NHTSA complaint 11737701

The contact owns a 2011 Buick Regal. The contact stated that while driving at 30 MPH, the vehicle stalled with the check engine warning light illuminated. The vehicle was able to be restarted. The dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was made aware…

Received Oct 8, 2025 · NHTSA complaint 11692104

The cars mileage was altered due to car being wrecked prior and the other car that was used to replace wrecked parts was hidden and vin number was altered. Copart Inc and ICT Sharp Rides are party's involved, I bought car on 12/28/2023 mileage was listed as 132525

Received Apr 16, 2024 · NHTSA complaint 11583341
Buick Regal
BUICK REGAL SIXTH GENERATION (OPEL INSIGNIA B) China. Representative photo; appearance varies by model year. Photo: Dinkun Chen, CC BY-SA 4.0, via Wikimedia Commons.

Frequently asked questions

Do all 2011 Buick Regals have engine problems?

No. NHTSA has 108 owner complaints about engine for the 2011 Buick Regal (39% of the 280 complaints for this model year). Complaint data shows that the problem is reported, not how many of all cars sold are affected.

Was there a recall on the 2011 Buick Regal engine?

No recall currently lists engine for this vehicle.

At what mileage do engine problems start?

The median reported mileage is 70,000 miles: half of the reports with a mileage came before that.

What do owners say about engine problems on the 2011 Buick Regal?

The most frequent phrase is “timing chain”, in 23 of 108 complaints, followed by “oil consumption” (10).

Other 2011 Buick Regal problems

See all 2011 Buick Regal problems or engine problems across all Regal years.