Cadillac
DeVille
Cadillac
Eldorado
Cadillac DeVille vs Cadillac Eldorado: 1999 Comparison
Specs side by side
What owners say
DeVille
Overall
Sentiment is bifurcated by generation. For classic models (1950s-1970s), sentiment is overwhelmingly positive, characterized by nostalgic appreciation for their iconic styling, immense size, powerful V8 engines (notably the 472 and 500 cubic inch motors), and their status as symbols of American luxury. These are viewed as comfortable, torque-rich cruisers.
Best version to buy
For classic models, the 1966 DeVille is specifically mentioned for its 7.0L (430 cubic inch) V8 and imposing dimensions. For the problematic Northstar era, the 2004-2005 model years are identified as having the updated "coarse thread" head bolts which partially addressed the pervasive head gasket failure issue.
Known issues
- ⚠Northstar V8 Head Gasket Failure: Catastrophic failure leading to coolant loss, overheating, and engine damage. Very frequent in pre-2004 models. Frequency: very frequent.
- ⚠Northstar V8 Oil Leaks: Persistent leaks from multiple engine seals (e.g., front cover, oil pan, rear main seal). Frequency: very frequent.
- ⚠Engine Mount Failure (Front): Common failure leading to engine movement, clunking noises during shifts, and driveline vibration. Specifically noted on post-2000 models without torque struts. Frequency: recurrent.
Eldorado
Overall
Sentiment is highly segmented by generation and is overwhelmingly based on ownership of classic or vintage models, with discussions centered on restoration, project viability, and historical character rather than modern daily usability. For classic generations (roughly 1957-1978), sentiment is positive, focusing on their iconic styling, smooth and powerful V8 engines (e.g., 425, 472, 500 cubic inches), luxurious ride quality, and their status as comfortable "personal luxury" cruisers. The front-wheel-drive layout of the 1967-1978 models is noted as a unique and effective feature for traction, especially in snow.
Best version to buy
Insufficient owner data available to declare a single "best" version. Positive ownership experiences are most frequently associated with the 1967-1978 generation, particularly convertibles, due to their powerful big-block engines, distinctive styling, and durable mechanical layout.
Known issues
- ⚠**Northstar (4.6L V8) Engine Failures (1993-2002)**: Blown head gaskets, warped aluminum cylinder heads, persistent oil consumption (approximately one quart per month), oil pan leaks.
- ⚠**HT4100 & 4.1L V8 Engine Problems (1980s models)**: Described as "horrible" engines; prone to water pump failure, failing nylon cam sprockets, coolant leaks, and general lack of power and reliability. Frequency: recurrent.
- ⚠**General Electrical Issues (1980s-2002 models)**: Window and sunroof mechanism failures, infotainment/touchscreen malfunctions (on advanced models), blinker light failures, various gremlins. Frequency: recurrent.
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Frequently asked questions
Which is more reliable, the Cadillac DeVille or the Cadillac Eldorado?
Owner reports show similar reliability sentiment for the Cadillac DeVille and the Cadillac Eldorado. Check the known issues listed above for specific differences between the two.
Which is better for families, the Cadillac DeVille or the Cadillac Eldorado?
Both seat a similar number of passengers based on our data. The Cadillac DeVille is classed as a Sedan, the Cadillac Eldorado as a Coupe, which affects cargo space and ride height for family use.
Which has better fuel economy, the Cadillac DeVille or the Cadillac Eldorado?
Fuel consumption data is limited for one or both models. Check the specs table above for the figures available on each catalogued version.
Which is cheaper to maintain, the Cadillac DeVille or the Cadillac Eldorado?
Exact maintenance costs aren't in our data, but reliability signals above are the closest proxy: fewer reported issues generally means lower repair costs over time.