1999 Buick Century Engine and Engine Cooling Problems
Owners have filed 55 complaints with NHTSA about engine and engine cooling problems on the 1999 Buick Century, 23% of all complaints for this model year. Half of the reports with a mileage happened before 52,900 miles. The words owners use most often: “intake manifold” (35% of reports).
- 55engine and engine cooling complaints
- 52,900median miles at failure
- 0mention a crash
- 0mention an injury
- 0related recalls
- $1,150typical repair cost reported by owners
What owners describe
Phrases that appear unusually often in these complaints compared with complaints about other cars.
- Intake manifold: mentioned in 19 of 55 complaints (35%)
- Dex cool: mentioned in 5 of 55 complaints (9%)
How much does it cost to fix?
Owners who wrote down what they paid or were quoted put the typical engine and engine cooling repair on the 1999 Buick Century at $1,150, and half of them between $970 and $1,350.
Based on 7 NHTSA complaints about this problem alone that state a repair bill or quote (2003–2007), converted to 2026 dollars with the U.S. consumer price index. These are owners' own figures, not a quote: they include dealer quotes, and owners who file complaints often faced larger repairs, so they can run higher than typical shop prices. Prices vary by shop, region and warranty coverage. How we calculate this.
At what mileage do engine and engine cooling problems happen?
Based on 31 complaints that reported the odometer reading.
How serious are the reports?
Of 55 complaints, 2 a fire.
Buick Century engine and engine cooling complaints by model year
| Model year | Engine and Engine Cooling complaints | Share of that year | Median miles |
|---|---|---|---|
| 2005 Century | 2 | 11% | 97,597 |
| 2003 Century | 13 | 10% | 47,600 |
| 2002 Century | 25 | 16% | 60,132 |
| 2001 Century | 27 | 19% | 57,500 |
| 2000 Century | 21 | 11% | 63,609 |
| 1999 Century | 55 | 23% | 52,900 |
| 1998 Century | 22 | 10% | 53,361 |
| 1997 Century | 7 | 7% | 70,000 |
| 1996 Century | 9 | 11% | — |
| 1995 Century | 11 | 11% | — |
When owners reported it
Related recalls (0)
No safety recall lists engine and engine cooling for the 1999 Buick Century. 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.
Tl*the contact owns a 1999 buick century. While driving approximately 55 mph, the temperature gauge increased and the contact began to smell burning antifreeze. The contact parked the vehicle and a mechanic stated that the intake gasket was leaking coolant and needed to be replaced. The current and…
Passenger airbag light on--means airbag will not/may not deploy if in an auto accident. Dealer sharpe buick replaced module approx 3 times but problem still exists. I was told that airbag light had to stay on constant before they could do anything, light is always on and problem was still not…
Both the intake manifold and the heater core failed on my car. *tr

Frequently asked questions
Do all 1999 Buick Centurys have engine and engine cooling problems?
No. NHTSA has 55 owner complaints about engine and engine cooling for the 1999 Buick Century (23% of the 235 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 1999 Buick Century 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 52,900 miles: half of the reports with a mileage came before that.
How much does it cost to fix engine and engine cooling problems on the 1999 Buick Century?
Owners report a typical cost of $1,150 (half paid between $970 and $1,350), from 7 complaints that state a repair bill or quote, in 2026 dollars.
What do owners say about engine and engine cooling problems on the 1999 Buick Century?
The most frequent phrase is “intake manifold”, in 19 of 55 complaints, followed by “dex cool” (5).
See all 1999 Buick Century problems or engine and engine cooling problems across all Century years.