1978 Cadillac DeVille Sedan
All photo credits
- Photo: 1978 Cadillac Sedan DeVille in Columbia Blue, Front Right, 06-11-2022 by Elise240SX, CC BY-SA 4.0, via Wikimedia Commons
- Photo: 1978 Cadillac Coupe de Ville, front left (Cruisin' the River Lowellville Car Show, June 19th, 2023) by MercurySable99, CC BY-SA 4.0, via Wikimedia Commons
- Photo: Cadillac Sedan DeVille (6074512801) by dave_7 from Lethbridge, Canada, CC BY 2.0, via Wikimedia Commons
- Photo: 1978 Cadillac Sedan DeVille D'Elegance in Columbia Blue, Rear Left, 06-10-2023 by Elise240SX, CC BY-SA 4.0, via Wikimedia Commons
- Photo: 1980 Cadillac Coupe Deville dashboard by That Hartford Guy, CC BY-SA 2.0, via Wikimedia Commons
The 1978 Cadillac DeVille Sedan is a 180-hp 7.0-liter V8 sedan with a 3-speed automatic and rear-wheel drive. It starts at $10,668 MSRP and is rated at 15 mpg combined.
It makes 180 horsepower at 4,000 rpm and 320 lb-ft of torque at 2000 rpm. EPA fuel-economy estimates are 13 mpg city and 19 mpg highway (15 mpg combined).
The DeVille measures 221.2 inches long on a 121.5-inch wheelbase.
| Spec | Value |
|---|---|
| Vehicle | |
| Body Type | Sedan |
| Powertrain | Gas |
| Price | |
| MSRP | $10,668 ($53,176 *) |
| Engine | |
| Engine Type | 425 cid OHV V8, Rochester Quadrajet 4-barrel carburetor |
| Displacement | 7 L |
| Horsepower | 180 hp @ 4,000 rpm |
| Torque | 320 lb-ft @ 2000 rpm |
| Valvetrain | OHV, 2 valves/cylinder, hydraulic lifters |
| Bore and Stroke | 103.7 x 103.1 |
| Injection Type | Rochester Quadrajet 4-barrel carburetor |
| Drivetrain | |
| Drive Type | RWD |
| Transmission | |
| Transmission | 3-speed automatic (Turbo-Hydramatic 400) |
| 1st Gear | 2.48 |
| 2nd Gear | 1.48 |
| 3rd Gear | 1 |
| Reverse | 2.07 |
| Fuel Economy | |
| City | 13 MPG |
| Highway | 19 MPG |
| Combined | 15 MPG |
| Dimensions & Weight | |
| Length | 221.2 in |
| Width | 76.4 in |
| Height | 56.7 in |
| Wheelbase | 121.5 in |
| Cargo Volume | 20 ft³ |
Similar cars
Rivals to the 1978 Cadillac DeVille Sedan with similar size, power and price from around the same years.
Safety & Recalls
NCAP safety ratings
Not crash-tested by NHTSA for this model year.
Recalls
4 recalls on file with NHTSA for the 1978 Cadillac DEVILLE. Not every recall applies to every trim or VIN — check yours at nhtsa.gov/recalls.
May 4, 1979 · VEHICLE SPEED CONTROL:ACCELERATOR PEDAL
THE INVOLVED VEHICLES WERE BUILT WITH AN ACCELERATOR PEDAL HAVING AN EXTENSION, OR RUBBER FLAP, AT THE BOTTOM OF THE PEDAL. THIS PEDAL FLAP COULD BE INADVERTENTLY DISPLACED BY A FLOOR COVERING AND WEDGED UNDER THE ACCELERATOR PEDAL IN A MANNER THAT CAN INFLUENCE THE THROTTLE SETTING AND INCREASE THE ENGINE IDLE RPM.
Remedy: THE DEALER WILL REMOVE THE RUBBER FLAP FROM THE ACCELERATOR.
NHTSA campaign 79V111000
Aug 30, 1978 · UNKNOWN OR OTHER
IF PAPER OR OTHER COMBUSTIBLE MATERIALS ARE PLACED IN THE INSTRUMENT PANEL ASHTRAY RECEPTACLE, THEY COULD BECOME IGNITED AND FLAMES FROM THE FIRE MAY REACH THE INTERIOR OF THE INSTRUMENT PANEL.
Remedy: OWNER WILL BE SENT A METAL HEAT SHIELD TO BE INSTALLED ABOVE THE INSTRUMENT PANEL, EITHER BY THE OWNER OR BY THE DEALER.
NHTSA campaign 78V189000
Nov 16, 1977 · WHEELS:LUGS/NUTS/BOLTS/STUDS
THE REAR WHEEL MOUNTING BOLTS ON THE AFFECTED VEHICLES, ARE BRITTLE AND THEREFORE MAY FRACTURE. THIS BRITTLENESS IS DUE TO IMPROPER HEAT TREATMENT DURING MANUFACTURE. IF THE BOLTS BREAK, THE TIRE AND WHEEL ASSEMBLY MAY SEPARATE FROM THE VEHICLE.
Remedy: DEALER WILL INSPECT AND, IF NECESSARY, WILL REPLACE DEFECTIVE BOLTS ON ALL AXLES AND THE TEN REAR AXLE WHEEL MOUNTING BOLTS, FREE OF CHARGE.
NHTSA campaign 77V200000
Sep 26, 1977 · VISIBILITY:WINDSHIELD WIPER/WASHER
SOME OF THE INVOLVED VEHICLES FAIL TO CONFORM TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 104, "WINDSHIELD WIPING AND WASHING SYSTEMS". THE WINDSHIELD WASHER BOTTLE ON THE INVOLVED VEHICLES MAY CRACK AND ALLOW WASHER FLUID TO DRAIN OUT.
Remedy: DEALER WILL INSPECT THE WASHER BOTTLE AND, IF NECESSARY, REPLACE IT WITHOUT CHARGE TO OWNER.
NHTSA campaign 77V162000
4 owner complaints to NHTSA for the 1978 Cadillac DEVILLE
Owner Complaints
4 owner complaints filed with NHTSA for the 1978 Cadillac DEVILLE. See all on nhtsa.gov
| Tires | 2 |
| Fuel System | 1 |
| Gasoline | 1 |
| Hydraulic | 1 |
| Service Brakes | 1 |
Complaints are unverified reports submitted to NHTSA by owners. They cover the whole model year, not a specific trim, and a count alone doesn't show how common a problem is.
Source: US National Highway Traffic Safety Administration (nhtsa.gov), matched as 1978 CADILLAC DEVILLE. US-market vehicles only; data cached for up to 7 days.