1999 Pontiac Sunfire problems & reliability
93 owner complaints filed with NHTSA for the 1999 Pontiac Sunfire, alongside 1 safety recall campaign. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
4 complaints report injuries (4 injured, 2 deaths reported).
Federal crash records (FARS 2020–2023): 1999 Pontiac Sunfire vehicles were involved in 5 fatal crashes with 5 occupant deaths. Involvement counts are not adjusted for how many are on the road and do not imply fault or a vehicle defect.
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Electrical System | 21 | 23% |
| Engine and Engine Cooling | 17 | 18% |
| Air Bags | 10 | 11% |
| Service Brakes, Hydraulic | 10 | 11% |
| Power Train | 8 | 9% |
| Unknown OR Other | 7 | 8% |
| Exterior Lighting | 6 | 6% |
| Steering | 6 | 6% |
| Visibility | 6 | 6% |
| Suspension | 5 | 5% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
Common symptoms owners describe
Keyword analysis of complaint narratives; one complaint can describe several symptoms.
Mileage when problems occurred
Half of the failures with a reported odometer reading occurred by 87,500 miles (middle 50% between 43,250 and 129,425 miles), based on 26 complaints that included mileage.
Complaints by incident year
What owners report
“I was purchasing this used car from a dealer. They replaced the ignition assembly 3 times. The car would mysteriously shut off, the ignition assembly would not allow the key to be removed and multiple times this happened. I lost allot of money I put on the car as it became obvious they could not fix it and I had to…”
Steering · filed Sep 5, 2014
“I was driving the car just after I purchased it and became cold so I turned on the heater and within 30 seconds smoke filled the car. I thought the engine was on fire. It smelled like burning oil or gas. I called delphi about recalls and before I could finish a sentence the man cut me off saying that the only recall…”
Engine and Engine Cooling · filed Mar 4, 2013
“Tl* the contact owns a 1999 pontiac sunfire. The contact stated that while driving 65 mph, the vehicle decelerated. The contact was able to safely maneuver to the shoulder and shut the vehicle off. The vehicle would not restart. The vehicle was then towed to a dealer for diagnosis. The dealer stated that they had to…”
Electrical System · filed Jul 19, 2012
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Technical service bulletins
107 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 1999 Pontiac Sunfire. The 10 most recent:
This warranty administration bulletin provides information regarding the field action courtesy transportation policy.
17-NA-073 · Service Bulletin/Repair Instructions · issued Feb 21, 2023
This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8…
PIP4723F · Service Bulletin/Repair Instructions · issued Jan 14, 2022
This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8…
PIP4723D · Service Bulletin/Repair Instructions · issued Jan 31, 2020
This informational bulletin provides information for dealers/technicians on Procedures to Unlock Delco Radio with Theftlock.
19NA273 · Service Bulletin/Repair Instructions · issued Dec 2, 2019
This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock. Technician will use the radio to get the scrambled code. Technician will need to…
PIC4696E · Service Bulletin/Repair Instructions · issued Nov 22, 2019
This warranty administration bulletin provides information regarding the field action courtesy transportation policy.
17NA073 · Service Bulletin/Repair Instructions · issued Sep 18, 2019
This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock. Technician will use the radio to get the scrambled code. Technician will need to…
PIC4696D · Service Bulletin/Repair Instructions · issued Sep 5, 2019
This warranty administration bulletin provides information regarding the field action courtesy transportation policy.
17NA073 · Service Bulletin/Repair Instructions · issued Feb 15, 2019
This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco Theft Lock. Technician will use the radio to get the scrambled code. Technician will need to…
PIC4696C · Service Bulletin/Repair Instructions · issued May 31, 2018
This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8…
PIP4723C · Service Bulletin/Repair Instructions · issued Sep 20, 2017
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
The 1999 Pontiac Sunfire has 1 NHTSA recall campaign — recall repairs are free at franchised dealers regardless of the vehicle’s age.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 1999 Pontiac Sunfire?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.
- · Owners most often reported problems around 87,500 miles — budget accordingly if the car is approaching that mileage.