1999 Cadillac Eldorado Engine Problems
- Complaints
- 2about this part
- Share
- 17%of 12 total for the year
- Median mileage
- 103,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the engine of the 1999 Cadillac Eldorado, 17% of the 12 complaints for this model year. Where a mileage was given, the median is 103,000 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.
“My wife purchased a 1999 Cadillac Eldorado in 2009 and it only had 38k miles on it. Now in 2016 it only has 103k miles on it but while driving the engine coolant temperature gauge will frequently go from 'normal' to 'engine hot - A/C off'. After shuting off the engine, letting it cool, and topping off the coolant level, the will operate in the 'normal' temperature range for several miles but then it will suddenly jump up to the 'engine hot - A/C off' range. The car is now at a repair shop and they have diagnosed that this 1999 Cadillac Eldorado has failing cylinder head gaskets. …”
NHTSA complaint #10873587, filed 2016-06, 103,000 miles“Cadillac Eldorado. Consumer writes in regards to information on vehicle engine failures. The consumer stated the engine was repaired. However, it hasn't worked correctly since.”
NHTSA complaint #10615482, filed 2014-07Engine: other model years
Other parts of the 1999 Cadillac Eldorado
← All problems reported for the 1999 Cadillac Eldorado
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 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