1999 Buick Riviera Engine Problems
- Complaints
- 1about this part
- Share
- 17%of 6 total for the year
- Median mileage
- 130,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 1 complaints about the engine of the 1999 Buick Riviera, 17% of the 6 complaints for this model year. Where a mileage was given, the median is 130,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Well for starters the car has 131,000 miles on it and clean interior. But....the drivers side power seat incline doesn't work, the blend box or an actuator is bad, the cruise control doesn't work, and the AC compressor is locked up. But.... The worst part is the oil leak coming from the front valve cover. It is spilling out on my exhaust manifold and smokes badly. I just read GM has a recall on all the l67 3.8l supercharged motors in grand prix and regals amongst other models with the 3.8l but not the rivieras. Can the riv get some love too. …”
NHTSA complaint #10903557, filed 2016-09, 130,000 milesEngine: other model years
Other parts of the 1999 Buick Riviera
2 complaintsTires
2 complaintsBrakes
1 complaintsElectrical system
1 complaintsEngine cooling
1 complaintsEquipment
1 complaintsOther or unknown
1 complaintsVehicle speed control
1 complaints
← All problems reported for the 1999 Buick Riviera
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology