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2003 Pontiac Bonneville problems

The 2003 Pontiac Bonneville has 67 complaints on file with NHTSA. The largest share (21%) concerns engine. After that come electrical system (15%) and steering (15%).

At a glance

Complaints
67 filed with NHTSA
Most reported
Engine 21% of complaints
Crashes and fires
4 and 6
Injuries and deaths
3 and 0
Typical mileage
81,000 miles 48 complaints with mileage

Source: NHTSA owner complaints

Where the complaints are

Share of this model year's complaints by the part of the car involved. One complaint can name more than one part, so the shares can add up to more than 100%.

  • Engine 21%
  • Electrical system 15%
  • Steering 15%
  • Fuel system 9%
  • Drivetrain & axles 7%
  • Air bags 4%
  • Wipers, windshield & visibility 4%
  • Brakes 3%
  • Cooling system 1%
  • Cruise control 1%

When problems show up

Complaints by mileage, 2003 Pontiac Bonneville Complaints by odometer reading in 20,000-mile steps. The median is about 81,000 miles. 0k to 20k miles: 6 complaints 20k to 40k miles: 6 complaints 40k to 60k miles: 5 complaints 60k to 80k miles: 6 complaints 80k to 100k miles: 11 complaints 100k to 120k miles: 5 complaints 120k to 140k miles: 2 complaints 140k to 160k miles: 1 complaints 160k to 180k miles: 1 complaints 180k to 200k miles: 2 complaints 200k+ miles: 3 complaints 040k80k120k160k200k miles Typical: 81,000 miles
Based on 48 complaints that include mileage. 35% were reported before 60,000 miles. The amber marker shows the median: half of these complaints happened before that mileage.
View the numbers
MileageComplaints
0k to 20k miles6
20k to 40k miles6
40k to 60k miles5
60k to 80k miles6
80k to 100k miles11
100k to 120k miles5
120k to 140k miles2
140k to 160k miles1
160k to 180k miles1
180k to 200k miles2
200k+ miles3

What the data shows

Among the 48 complaints that report mileage, the typical (median) problem appeared at about 80,000 miles. For engine specifically, the median reported mileage is about 90,000 miles (12 complaints with mileage).

Safety-related details: 4 complaints mention a crash; 6 complaints mention a fire; 3 injuries reported.

Looking only at complaints filed within five years of the model year (so older and newer years are comparable), the 2003 ranks 13th most-complained-about out of 16 model years of the Pontiac Bonneville with enough data (24 complaints in that window). It is also covered by 2 safety recall campaigns.

What owners wrote

A few complaints as filed, shortened and with personal details removed. The first ones are among the most serious reports for this model year; the rest are typical.

Vehicle was involved in a head on collision while driving at 45 MPH on an icy road. Upon impact the child in the middle rear seat with seat belt on flew forward and hit the plastic console between both front seats and split open the forehead. Consumer felt that due to the location of the console it posed a serious safety hazard to the occupant in the middle rear seat in an accident.

Reported at 29,000 miles, January 2004 CrashInjury

Tl* the contact owns a 2003 pontiac bonneville. While approaching a traffic stop at 25 MPH, the contact failed to stop the vehicle and crashed into the rear of another vehicle. The contact's seat belt failed to properly restrain her and did not retract. The front driver's side air bag did not deploy. The contact sustained injuries to the chest, head, and back. The vehicle was destroyed. The manufacturer did not provide a reason for the air bag and seat belt failure. The failure and the current mileages were 72,000.

Reported at 72,000 miles, December 2009 CrashInjury

Dt*: the contact stated while driving slowly on a side street the vehicle became hard to steer and a noise came from the rack and pinion area. There were no warning indicators prior to the difficult steering or noise. The contact inspected the vehicle, and determined power steering fluid seeping from the rack and pinion. The vehicle was immediately taken to the service dealer for inspections. The dealer determined the seepage was normal.

Reported at 10,000 miles, December 2005

Tl*the contact owns a 2003 pontiac bonneville. While driving 15 MPH or turning the vehicle left or right, the contact heard a clunking sound coming from the steering column. He can also felt the steering wheel vibrate once the noise began. The vehicle was taken to a local mechanic, who stated that other consumers with the same type of vehicle experienced identical failures in the past. The contact believes that a recall should be issued because it appears to be a manufacturer defect.

Reported at 35,000 miles, January 2008

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