1978 Cadillac Seville Elegante Diesel
Unverified
All photo credits
- Photo: 1979 Cadillac Seville Opera Coupe by Grandeur, front 6.16.19 by Kevauto, CC BY-SA 4.0, via Wikimedia Commons
- Photo: 1979 Cadillac Seville (11418452193) by Niels de Wit from Lunteren, The Netherlands, CC BY 2.0, via Wikimedia Commons
- Photo: 1979 Cadillac Seville (11418315085) by Niels de Wit from Lunteren, The Netherlands, CC BY 2.0, via Wikimedia Commons
- Photo: 1979 Cadillac Seville Opera Coupe by Grandeur, rear 6.16.19 by Kevauto, CC BY-SA 4.0, via Wikimedia Commons
- Photo: 1977 Cadillac Seville dashboard (9363423196) by dave_7 from Lethbridge, Canada, CC BY 2.0, via Wikimedia Commons
The 1978 Cadillac Seville Elegante Diesel is a 120-hp 5.7-liter V8 with a 3-speed automatic and rear-wheel drive. It is rated at 24 mpg combined.
It makes 120 horsepower at 3,600 rpm and 220 lb-ft of torque at 1900 rpm. EPA fuel-economy estimates are 21 mpg city and 30 mpg highway (24 mpg combined).
The Seville measures 204.0 inches long on a 114.3-inch wheelbase and has a curb weight of 4,340 lb.
| Spec | Value |
|---|---|
| Vehicle | |
| Body Type | Sedan |
| Powertrain | Diesel |
| Engine | |
| Engine Type | 5.7L OHV V8 diesel (Oldsmobile LF9) |
| Displacement | 5.7 L |
| Horsepower | 120 hp @ 3,600 rpm |
| Torque | 220 lb-ft @ 1900 rpm |
| Valvetrain | OHV, 2 valves/cylinder |
| Bore and Stroke | 103.0 x 86.0 |
| Compression Ratio | 22.5:1 |
| Injection Type | Indirect injection |
| Drivetrain | |
| Drive Type | RWD |
| Differential Type | Salisbury hypoid, 8.5-in ring gear (clutch-type limited-slip optional) |
| Transmission | |
| Transmission | 3-speed automatic (Turbo-Hydramatic 400) |
| 1st Gear | 2.48 |
| 2nd Gear | 1.48 |
| 3rd Gear | 1 |
| Reverse | 2.07 |
| Final Drive | 2.56 |
| Fuel Economy | |
| City | 21 MPG |
| Highway | 30 MPG |
| Combined | 24 MPG |
| Recommended Fuel | Diesel |
| Suspension | |
| Front Suspension | Independent unequal-length control arms, coil springs |
| Rear Suspension | Hotchkiss live axle, multi-leaf springs, automatic level control |
| Front Stabilizer Bar | Link-type |
| Rear Stabilizer Bar | Link-type |
| Brakes | |
| Front Brake Calipers | Single-piston sliding |
| Front Brake Disc | Ventilated disc |
| Rear Brake Disc | Ventilated disc |
| Tires & Wheels | |
| Wheels Front | 15 x 6 JJ wire |
| Wheels Rear | 15 x 6 JJ wire |
| Tires Front | GR78-15B steel-belted radial |
| Tires Rear | GR78-15B steel-belted radial |
| Dimensions & Weight | |
| Length | 204 in |
| Width | 71.8 in |
| Height | 54.6 in |
| Wheelbase | 114.3 in |
| Front Track | 61.3 in |
| Rear Track | 59 in |
| Cargo Volume | 13 ft³ |
| Curb Weight | 4,340 lbs |
Similar cars
Rivals to the 1978 Cadillac Seville Elegante Diesel 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
2 recalls on file with NHTSA for the 1978 Cadillac SEVILLE. Not every recall applies to every trim or VIN — check yours at nhtsa.gov/recalls.
Aug 30, 1979 · FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:FUEL RAIL
DUE TO FUEL HOSE CONNECTION DETERIORATION, THE FUEL HOSE CONNECTION FROM THE UNDERBODY FUEL PIPE TO THE FUEL RAIL AT THE REAR OF THE ENGINE MAY LEAK GASOLINE.
Remedy: DEALER WILL REPLACE THE EXISTING HOSE WITH A HYPALON HOSE AND NEW CLAMPS. DEALER WILL ALSO CHECK THE PRESSURE OF THE FUEL SYSTEM AT NO COST TO OWNER.
NHTSA campaign 79V197000
Dec 28, 1977 · UNKNOWN OR OTHER
Remedy: DEALER WILL REPLACE EXISTING CONSOLE WITH ONE THAT CONTAINS A LID LATCHING MECHANISM, WITHOUT CHARGE TO OWNER.
NHTSA campaign 77V243000
2 owner complaints to NHTSA for the 1978 Cadillac SEVILLE
Owner Complaints
2 owner complaints filed with NHTSA for the 1978 Cadillac SEVILLE. See all on nhtsa.gov
| Exterior Lighting | 1 |
| Fuel System | 1 |
| Gasoline | 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 SEVILLE. US-market vehicles only; data cached for up to 7 days.