Buick Riviera MPG by Year
| Year | Combined | Fuel | Cost per 100 miles | Trims | Recalls |
|---|---|---|---|---|---|
| 1999 | 19 | Premium gasoline | $26.27 | 1 | – |
| 1998 | 19 | Regular gasoline | $21.41 | 1 | – |
| 1997 | 19–20 | Premium gasoline, Regular gasoline | $24.96 | 2 | – |
| 1996 | 19–21 | Premium gasoline, Regular gasoline | $23.77 | 2 | – |
| 1995 | 20 | Regular gasoline | $20.34 | 1 | – |
| 1993 | 20 | Regular gasoline | $20.34 | 1 | – |
| 1992 | 19 | Regular gasoline | $21.41 | 1 | – |
| 1991 | 19 | Regular gasoline | $21.41 | 1 | – |
| 1990 | 19 | Regular gasoline | $21.41 | 1 | – |
| 1989 | 20 | Regular gasoline | $20.34 | 1 | – |
| 1988 | 20 | Regular gasoline | $20.34 | 1 | – |
| 1987 | 19 | Regular gasoline | $21.41 | 1 | – |
| 1986 | 20 | Regular gasoline | $20.34 | 1 | – |
| 1985 | 17–21 | Regular gasoline, Diesel, Premium gasoline | $19.38 | 7 | – |
| 1984 | 15–21 | Regular gasoline, Diesel | $19.38 | 11 | – |
Fuel economy: U.S. EPA fueleconomy.gov