2005 Chevrolet Cobalt Engine and Engine Cooling Problems

Source: NHTSA · Updated Feb 12, 2026 · 51 complaints analyzed

Owners have filed 51 complaints with NHTSA about engine and engine cooling problems on the 2005 Chevrolet Cobalt, 3% of all complaints for this model year. Half of the reports with a mileage happened before 45,000 miles. The words owners use most often: “stalled without” (10% of reports).

What owners describe

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

  • Stalled without: mentioned in 5 of 51 complaints (10%)

At what mileage do engine and engine cooling problems happen?

Based on 45 complaints that reported the odometer reading.

Under 10k miles9 · 20%
10k–25k miles8 · 18%
25k–50k miles9 · 20%
50k–75k miles5 · 11%
75k–100k miles7 · 16%
100k–150k miles7 · 16%
150k+ miles0 · 0%

How serious are the reports?

Of 51 complaints, 3 a fire.

Chevrolet Cobalt engine and engine cooling complaints by model year

Peak: 2005, with 51 complaints
2005: 512005512006: 432006432007: 242007242008: 9200892009: 122009122010: 420104

n = 143 complaints · Source: NHTSA

Model yearEngine and Engine Cooling complaintsShare of that yearMedian miles
2010 Cobalt41%75,710
2009 Cobalt122%45,890
2008 Cobalt91%40,000
2007 Cobalt242%49,500
2006 Cobalt432%40,639
2005 Cobalt513%45,000

When owners reported it

Peak: 2010, with 11 complaints
2005: 5200552006: 5200652007: 7200772008: 3200832009: 4200942010: 112010112011: 8201182012: 3201232013: 1201312014: 420144

n = 51 complaints · Source: NHTSA

Related recalls (0)

No safety recall lists engine and engine cooling for the 2005 Chevrolet Cobalt. 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.

I would like to start a petition for an investigation on the replacement parts being used for the ignition switch recall and the software they use to re-program or re-learn the computer in the vehicles that have been recalled. The reason i am requesting this is because my moms 2005 chevy cobalt was…

Received Jul 29, 2014 · NHTSA complaint 10617536

Tl* the contact owns a 2005 chevrolet cobalt. The contact stated while driving 55 mph, the vehicle stalled without warning and immediately burst into flames. The fire department extinguished the fire. There were no injuries. The vehicle was destroyed. The manufacturer was made aware of the failure…

Received May 9, 2014 · NHTSA complaint 10587411

2005 chevrolet cobalt. Consumer writes in regards to ignition switch recall notice. *smd the consumer stated the first week of owning the vehicle, it would not start. When she called the dealer, the told her to move the steering wheel up and down and tap on the accelerator pedal. There were times…

Received May 7, 2014 · NHTSA complaint 10585888
Chevrolet Cobalt
2005-2007 Chevrolet Cobalt photographed in USA.. Representative photo; appearance varies by model year. Photo: IFCAR, Public domain, via Wikimedia Commons.

Frequently asked questions

Do all 2005 Chevrolet Cobalts have engine and engine cooling problems?

No. NHTSA has 51 owner complaints about engine and engine cooling for the 2005 Chevrolet Cobalt (3% of the 1,649 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 2005 Chevrolet Cobalt engine and engine cooling?

No recall currently lists engine and engine cooling for this vehicle.

At what mileage do engine and engine cooling problems start?

The median reported mileage is 45,000 miles: half of the reports with a mileage came before that.

What do owners say about engine and engine cooling problems on the 2005 Chevrolet Cobalt?

The most frequent phrase is “stalled without”, in 5 of 51 complaints.

Other 2005 Chevrolet Cobalt problems

See all 2005 Chevrolet Cobalt problems or engine and engine cooling problems across all Cobalt years.