Buick Riviera MPG
Its best-rated version reaches 21 MPG combined in 1984–1985 and 1996. Its weakest year peaked at 19 MPG (1987, 1990–1992 and 1998–1999).
a year at 15,000 miles for the best 1999 version. Put it next to its 1984 predecessor, at your own mileage.
Compare in gallonsThe Buick Riviera has EPA ratings for 15 model years, 1984–1999, every one of them among midsize cars. In 1985 its most efficient version still placed fifth from the bottom of 44 compact cars, where the Rolls-Royce Camargue rated lowest.
Of the 991 car nameplates on this site, few have had a diesel version (60 of them); this one has.
Among 46 midsize cars, 1999
The Riviera placed 29th (tied). The class leader was the Dodge Stratus at 27 MPG. The next higher rating, 20 MPG, is shared by six nameplates.
The Riviera, five years at a time
Average rating of its best version per span, placed among midsize cars.
Where the engine list turned over
- 1986
Dropped: 5.0-liter 8-cylinder, 5.7-liter 8-cylinder diesel. Best rating 21 → 20 MPG.
Powertrains under the name
- Diesel
Rated in 1984–1985.
- Gasoline
Rated in 1984–1993 and 1995–1999.
All 15 model years, best and lowest version
| Model years | Best version | Combined | City / hwy | Lowest version | Versions |
|---|---|---|---|---|---|
| 1998–1999 | Riviera | 19 | 16 / 25 | 19 | 1 |
| 1997 | Riviera | 20 | 17 / 26 | 19 | 2 |
| 1996 | Riviera | 21 | 17 / 27 | 19 | 2 |
| 1995 | Riviera | 20 | 17 / 26 | 20 | 1 |
| 1993 | Riviera | 20 | 17 / 25 | 20 | 1 |
| 1991–1992 | Riviera | 19 | 16 / 24 | 19 | 1 |
| 1990 | Riviera | 19 | 16 / 25 | 19 | 1 |
| 1988–1989 | Riviera | 20 | 17 / 26 | 20 | 1 |
| 1987 | Riviera | 19 | 16 / 25 | 19 | 1 |
| 1986 | Riviera | 20 | 17 / 27 | 20 | 1 |
| 1985 | Riviera diesel | 21 | 18 / 26 | 17 | 7 |
| 1984 | Riviera diesel | 21 | 18 / 26 | 15 | 11 |
Version names in the EPA list: Riviera, Riviera Convertible.
Same class, 1999
Read next: How EPA MPG ratings changed from 1984 to 2026 · How to read this page