Buick Riviera Gas Tank Size & Fuel Capacity by Year
18.2–20.0gal · 69–76 L
Across 9 model years (1990–1999), the Buick Riviera has used tanks from 18.2–20.0 gallons. The 1999 model holds 18.5 gallons.
Pick your model year
How the tank changed over the years
Buick Riviera tank size by generation
Model years with the same tank sizes, grouped. A change usually marks a new generation or a redesign.
| Model years | Tank | Liters |
|---|---|---|
| 1998–1999 | 18.5 gallons | 70 L |
| 1995–1997 | 20.0 gallons | 76 L |
| 1991–1993 | 18.8 gallons | 71 L |
| 1990 | 18.2 gallons | 69 L |
Buick Riviera tank size by year
| Year | Tank | Liters | Best highway range | Trims |
|---|---|---|---|---|
| 1999 Buick Riviera | 18.5 gallons | 70 L | 463 mi | 1 |
| 1998 Buick Riviera | 18.5 gallons | 70 L | 463 mi | 1 |
| 1997 Buick Riviera | 20.0 gallons | 76 L | 520 mi | 2 |
| 1996 Buick Riviera | 20.0 gallons | 76 L | 540 mi | 2 |
| 1995 Buick Riviera | 20.0 gallons | 76 L | 520 mi | 2 |
| 1993 Buick Riviera | 18.8 gallons | 71 L | 470 mi | 1 |
| 1992 Buick Riviera | 18.8 gallons | 71 L | 451 mi | 1 |
| 1991 Buick Riviera | 18.8 gallons | 71 L | 451 mi | 1 |
| 1990 Buick Riviera | 18.2 gallons | 69 L | 455 mi | 1 |
Buick Riviera fuel system recalls by year
NHTSA lists fuel-system recalls for 1 Buick Riviera model year. Each year's page has the details, the risk and the free remedy.
Frequently asked questions
What size gas tank does the Buick Riviera have?
The 1999 Buick Riviera holds 18.5 gallons. Older years range from 18.2–20.0 gallons; the table has every year.
Has the tank size changed over the years?
Yes. The largest tank changed in 1998, 1995, 1991.