Buick Riviera MPG by Year & Engine (EPA)
EPA fuel-economy ratings for every rated Buick Riviera model year from 1984 to 1999 — each engine and transmission with its official city, highway and combined figures. Over these years the Riviera has been offered with 3.8L 6-cyl, 5.7L 8-cyl, 5.0L 8-cyl, 4.1L 6-cyl engines; the most efficient version is the 1996 (up to 21 MPG combined). Data: U.S. Department of Energy & EPA, fueleconomy.gov; prices are live medians from VehiSales listings.
Buick Riviera fuel economy by year
| Year | Combined | Engines | Median used price | For sale |
|---|---|---|---|---|
| 1999 | 19 MPG | 3.8L 6-cyl | — | — |
| 1998 | 19 MPG | 3.8L 6-cyl | — | — |
| 1997 | 19–20 MPG | 3.8L 6-cyl | — | — |
| 1996 | 19–21 MPG | 3.8L 6-cyl | — | — |
| 1995 | 20 MPG | 3.8L 6-cyl | — | — |
| 1993 | 20 MPG | 3.8L 6-cyl | — | — |
| 1992 | 19 MPG | 3.8L 6-cyl | — | — |
| 1991 | 19 MPG | 3.8L 6-cyl | — | — |
| 1990 | 19 MPG | 3.8L 6-cyl | — | — |
| 1989 | 20 MPG | 3.8L 6-cyl | — | — |
| 1988 | 20 MPG | 3.8L 6-cyl | — | — |
| 1987 | 19 MPG | 3.8L 6-cyl | — | — |
| 1986 | 20 MPG | 3.8L 6-cyl | — | — |
| 1985 | 17–21 MPG | 5.7L 8-cyl, 5.0L 8-cyl, 3.8L 6-cyl | — | — |
| 1984 | 15–21 MPG | 5.7L 8-cyl, 5.0L 8-cyl, 3.8L 6-cyl, 4.1L 6-cyl | — | — |
1999 Buick Riviera: engines & MPG
The 1999 Riviera was EPA-rated in 1 version (3.8L 6-cyl), with combined economy of 19 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Riviera | 3.8L 6-cyl | Automatic 4-spd | Premium | 16 | 25 | 19 MPG |
1998 Buick Riviera: engines & MPG
The 1998 Riviera was EPA-rated in 1 version (3.8L 6-cyl), with combined economy of 19 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Riviera | 3.8L 6-cyl | Automatic 4-spd | Regular | 16 | 25 | 19 MPG |
1997 Buick Riviera: engines & MPG
The 1997 Riviera was EPA-rated in 2 versions (3.8L 6-cyl), with combined economy from 19 to 20 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Riviera | 3.8L 6-cyl | Automatic 4-spd | Regular | 17 | 26 | 20 MPG |
| Riviera | 3.8L 6-cyl | Automatic 4-spd | Premium | 16 | 24 | 19 MPG |
1996 Buick Riviera: engines & MPG
The 1996 Riviera was EPA-rated in 2 versions (3.8L 6-cyl), with combined economy from 19 to 21 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Riviera | 3.8L 6-cyl | Automatic 4-spd | Regular | 17 | 27 | 21 MPG |
| Riviera | 3.8L 6-cyl | Automatic 4-spd | Premium | 16 | 25 | 19 MPG |
1995 Buick Riviera: engines & MPG
The 1995 Riviera was EPA-rated in 1 version (3.8L 6-cyl), with combined economy of 20 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Riviera | 3.8L 6-cyl | Automatic 4-spd | Regular | 17 | 26 | 20 MPG |
1993 Buick Riviera: engines & MPG
The 1993 Riviera was EPA-rated in 1 version (3.8L 6-cyl), with combined economy of 20 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Riviera | 3.8L 6-cyl | Automatic 4-spd | Regular | 17 | 25 | 20 MPG |
1992 Buick Riviera: engines & MPG
The 1992 Riviera was EPA-rated in 1 version (3.8L 6-cyl), with combined economy of 19 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Riviera | 3.8L 6-cyl | Automatic 4-spd | Regular | 16 | 24 | 19 MPG |
1991 Buick Riviera: engines & MPG
The 1991 Riviera was EPA-rated in 1 version (3.8L 6-cyl), with combined economy of 19 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Riviera | 3.8L 6-cyl | Automatic 4-spd | Regular | 16 | 24 | 19 MPG |
1990 Buick Riviera: engines & MPG
The 1990 Riviera was EPA-rated in 1 version (3.8L 6-cyl), with combined economy of 19 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Riviera | 3.8L 6-cyl | Automatic 4-spd | Regular | 16 | 25 | 19 MPG |
1989 Buick Riviera: engines & MPG
The 1989 Riviera was EPA-rated in 1 version (3.8L 6-cyl), with combined economy of 20 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Riviera | 3.8L 6-cyl | Automatic 4-spd | Regular | 17 | 26 | 20 MPG |
1988 Buick Riviera: engines & MPG
The 1988 Riviera was EPA-rated in 1 version (3.8L 6-cyl), with combined economy of 20 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Riviera | 3.8L 6-cyl | Automatic 4-spd | Regular | 17 | 26 | 20 MPG |
1987 Buick Riviera: engines & MPG
The 1987 Riviera was EPA-rated in 1 version (3.8L 6-cyl), with combined economy of 19 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Riviera | 3.8L 6-cyl | Automatic 4-spd | Regular | 16 | 25 | 19 MPG |
1986 Buick Riviera: engines & MPG
The 1986 Riviera was EPA-rated in 1 version (3.8L 6-cyl), with combined economy of 20 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Riviera | 3.8L 6-cyl | Automatic 4-spd | Regular | 17 | 27 | 20 MPG |
1985 Buick Riviera: engines & MPG
The 1985 Riviera was EPA-rated in 7 versions (5.7L 8-cyl, 5.0L 8-cyl, 3.8L 6-cyl), with combined economy from 17 to 21 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Riviera | 5.7L 8-cyl | Automatic 4-spd | Diesel | 18 | 26 | 21 MPG |
| Riviera Convertible | 5.0L 8-cyl | Automatic 4-spd | Regular | 15 | 21 | 17 MPG |
| Riviera Convertible | 3.8L 6-cyl | Automatic 4-spd | Premium | 14 | 22 | 17 MPG |
| Riviera | 5.0L 8-cyl | Automatic 4-spd | Regular | 15 | 20 | 17 MPG |
| Riviera | 3.8L 6-cyl | Automatic 4-spd | Premium | 15 | 22 | 17 MPG |
| Riviera Convertible | 5.0L 8-cyl | Automatic 4-spd | Regular | 15 | 20 | 17 MPG |
| Riviera | 5.0L 8-cyl | Automatic 4-spd | Regular | 15 | 21 | 17 MPG |
1984 Buick Riviera: engines & MPG
The 1984 Riviera was EPA-rated in 9 versions (5.7L 8-cyl, 5.0L 8-cyl, 3.8L 6-cyl, 4.1L 6-cyl), with combined economy from 15 to 21 MPG.
| Version | Engine | Transmission | Fuel | City | Hwy | Combined |
|---|---|---|---|---|---|---|
| Riviera | 5.7L 8-cyl | Automatic 4-spd | Diesel | 18 | 26 | 21 MPG |
| Riviera Convertible | 5.0L 8-cyl | Automatic 4-spd | Regular | 14 | 20 | 16 MPG |
| Riviera | 5.0L 8-cyl | Automatic 4-spd | Regular | 14 | 20 | 16 MPG |
| Riviera Convertible | 3.8L 6-cyl | Automatic 4-spd | Regular | 13 | 20 | 15 MPG |
| Riviera | 4.1L 6-cyl | Automatic 4-spd | Regular | 13 | 20 | 15 MPG |
| Riviera | 3.8L 6-cyl | Automatic 4-spd | Regular | 13 | 20 | 15 MPG |
| Riviera Convertible | 4.1L 6-cyl | Automatic 4-spd | Regular | 13 | 19 | 15 MPG |
| Riviera | 4.1L 6-cyl | Automatic 4-spd | Regular | 13 | 19 | 15 MPG |
| Riviera Convertible | 4.1L 6-cyl | Automatic 4-spd | Regular | 13 | 20 | 15 MPG |
Frequently asked questions
What MPG does a Buick Riviera get?
Depending on year and engine, EPA combined ratings for the Riviera range from 19 to 21 MPG. The most efficient rated version is the 1996 model year.
What engines does the 1999 Buick Riviera have?
The 1999 Riviera was EPA-rated with 3.8L 6-cyl engines — see the 1999 table above for each version's exact city/highway figures.
Does the Buick Riviera require premium gas?
Some versions do: EPA lists premium gasoline and regular gasoline and diesel depending on year and engine — check your year's table above.
https://vehisales.com/research/fuel-economy/buick/riviera.
See also: Buick Riviera hub — live listings, prices & reliability · Most fuel-efficient cars by segment · Model price trends. Media inquiries: [email protected].