Buick Century MPG by Year & Engine (EPA)

EPA fuel-economy ratings for every rated Buick Century model year from 1984 to 2005 — each engine and transmission with its official city, highway and combined figures. Over these years the Century has been offered with 3.1L 6-cyl, 3.8L 6-cyl, 2.2L 4-cyl, 3.3L 6-cyl, 2.5L 4-cyl, 2.8L 6-cyl engines; the most efficient version is the 1985 (up to 27 MPG combined). Data: U.S. Department of Energy & EPA, fueleconomy.gov; prices are live medians from VehiSales listings.

Buick Century fuel economy by year

YearCombinedEnginesMedian used priceFor sale
2005 21 MPG 3.1L 6-cyl — —
2004 21 MPG 3.1L 6-cyl — —
2003 21 MPG 3.1L 6-cyl — —
2002 21 MPG 3.1L 6-cyl — —
2001 21 MPG 3.1L 6-cyl — —
2000 21 MPG 3.1L 6-cyl — —
1999 21 MPG 3.1L 6-cyl — —
1998 21 MPG 3.1L 6-cyl — —
1997 19–21 MPG 3.1L 6-cyl, 3.8L 6-cyl — —
1996 21–24 MPG 2.2L 4-cyl, 3.1L 6-cyl — —
1995 20 MPG 3.1L 6-cyl — —
1994 20–24 MPG 2.2L 4-cyl, 3.1L 6-cyl — —
1993 19–23 MPG 2.2L 4-cyl, 3.3L 6-cyl — —
1992 19–22 MPG 2.5L 4-cyl, 3.3L 6-cyl — —
1991 19–22 MPG 2.5L 4-cyl, 3.3L 6-cyl — —
1990 19–23 MPG 2.5L 4-cyl, 3.3L 6-cyl — —
1989 19–24 MPG 2.5L 4-cyl, 2.8L 6-cyl, 3.3L 6-cyl — —
1988 20–24 MPG 2.5L 4-cyl, 2.8L 6-cyl, 3.8L 6-cyl — —
1987 19–23 MPG 2.5L 4-cyl, 2.8L 6-cyl, 3.8L 6-cyl — —
1986 19–23 MPG 2.5L 4-cyl, 3.8L 6-cyl, 2.8L 6-cyl — —
1985 17–27 MPG 4.3L 6-cyl, 2.5L 4-cyl, 3.0L 6-cyl, 3.8L 6-cyl — —
1984 17–25 MPG 4.3L 6-cyl, 2.5L 4-cyl, 3.0L 6-cyl, 3.8L 6-cyl — —

2005 Buick Century: engines & MPG

The 2005 Century was EPA-rated in 1 version (3.1L 6-cyl), with combined economy of 21 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Century 3.1L 6-cyl Automatic 4-spd Regular 18 27 21 MPG

2004 Buick Century: engines & MPG

The 2004 Century was EPA-rated in 1 version (3.1L 6-cyl), with combined economy of 21 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Century 3.1L 6-cyl Automatic 4-spd Regular 18 27 21 MPG

2003 Buick Century: engines & MPG

The 2003 Century was EPA-rated in 1 version (3.1L 6-cyl), with combined economy of 21 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Century 3.1L 6-cyl Automatic 4-spd Regular 18 26 21 MPG

2002 Buick Century: engines & MPG

The 2002 Century was EPA-rated in 1 version (3.1L 6-cyl), with combined economy of 21 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Century 3.1L 6-cyl Automatic 4-spd Regular 18 26 21 MPG

2001 Buick Century: engines & MPG

The 2001 Century was EPA-rated in 1 version (3.1L 6-cyl), with combined economy of 21 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Century 3.1L 6-cyl Automatic 4-spd Regular 18 26 21 MPG

2000 Buick Century: engines & MPG

The 2000 Century was EPA-rated in 1 version (3.1L 6-cyl), with combined economy of 21 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Century 3.1L 6-cyl Automatic 4-spd Regular 18 27 21 MPG

1999 Buick Century: engines & MPG

The 1999 Century was EPA-rated in 1 version (3.1L 6-cyl), with combined economy of 21 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Century 3.1L 6-cyl Automatic 4-spd Regular 17 26 21 MPG

1998 Buick Century: engines & MPG

The 1998 Century was EPA-rated in 1 version (3.1L 6-cyl), with combined economy of 21 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Century 3.1L 6-cyl Automatic 4-spd Regular 17 27 21 MPG

1997 Buick Century: engines & MPG

The 1997 Century was EPA-rated in 3 versions (3.1L 6-cyl, 3.8L 6-cyl), with combined economy from 19 to 21 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Regal/Century 3.1L 6-cyl Automatic 4-spd Regular 18 26 21 MPG
Regal/Century 3.8L 6-cyl Automatic 4-spd Regular 17 27 20 MPG
Regal/Century 3.8L 6-cyl Automatic 4-spd Premium 16 26 19 MPG

1996 Buick Century: engines & MPG

The 1996 Century was EPA-rated in 3 versions (2.2L 4-cyl, 3.1L 6-cyl), with combined economy from 21 to 24 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Century 2.2L 4-cyl Automatic 3-spd Regular 21 29 24 MPG
Century Wagon 3.1L 6-cyl Automatic 4-spd Regular 18 26 21 MPG
Century 3.1L 6-cyl Automatic 4-spd Regular 18 26 21 MPG

1995 Buick Century: engines & MPG

The 1995 Century was EPA-rated in 2 versions (3.1L 6-cyl), with combined economy of 20 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Century 3.1L 6-cyl Automatic 4-spd Regular 17 26 20 MPG
Century Wagon 3.1L 6-cyl Automatic 4-spd Regular 17 26 20 MPG

1994 Buick Century: engines & MPG

The 1994 Century was EPA-rated in 4 versions (2.2L 4-cyl, 3.1L 6-cyl), with combined economy from 20 to 24 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Century 2.2L 4-cyl Automatic 3-spd Regular 22 28 24 MPG
Century Wagon 2.2L 4-cyl Automatic 3-spd Regular 19 26 22 MPG
Century Wagon 3.1L 6-cyl Automatic 4-spd Regular 17 26 20 MPG
Century 3.1L 6-cyl Automatic 4-spd Regular 17 26 20 MPG

1993 Buick Century: engines & MPG

The 1993 Century was EPA-rated in 6 versions (2.2L 4-cyl, 3.3L 6-cyl), with combined economy from 19 to 23 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Century 2.2L 4-cyl Automatic 3-spd Regular 21 28 23 MPG
Century Wagon 3.3L 6-cyl Automatic 4-spd Regular 18 26 21 MPG
Century Wagon 2.2L 4-cyl Automatic 3-spd Regular 18 26 21 MPG
Century 3.3L 6-cyl Automatic 4-spd Regular 18 26 21 MPG
Century 3.3L 6-cyl Automatic 3-spd Regular 17 24 19 MPG
Century Wagon 3.3L 6-cyl Automatic 3-spd Regular 17 24 19 MPG

1992 Buick Century: engines & MPG

The 1992 Century was EPA-rated in 6 versions (2.5L 4-cyl, 3.3L 6-cyl), with combined economy from 19 to 22 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Century 2.5L 4-cyl Automatic 3-spd Regular 19 28 22 MPG
Century Wagon 2.5L 4-cyl Automatic 3-spd Regular 18 26 21 MPG
Century 3.3L 6-cyl Automatic 4-spd Regular 17 27 20 MPG
Century Wagon 3.3L 6-cyl Automatic 4-spd Regular 17 27 20 MPG
Century 3.3L 6-cyl Automatic 3-spd Regular 17 24 19 MPG
Century Wagon 3.3L 6-cyl Automatic 3-spd Regular 17 24 19 MPG

1991 Buick Century: engines & MPG

The 1991 Century was EPA-rated in 6 versions (2.5L 4-cyl, 3.3L 6-cyl), with combined economy from 19 to 22 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Century 2.5L 4-cyl Automatic 3-spd Regular 19 28 22 MPG
Century Wagon 2.5L 4-cyl Automatic 3-spd Regular 18 26 21 MPG
Century Wagon 3.3L 6-cyl Automatic 4-spd Regular 17 27 20 MPG
Century 3.3L 6-cyl Automatic 4-spd Regular 17 27 20 MPG
Century 3.3L 6-cyl Automatic 3-spd Regular 17 24 19 MPG
Century Wagon 3.3L 6-cyl Automatic 3-spd Regular 17 23 19 MPG

1990 Buick Century: engines & MPG

The 1990 Century was EPA-rated in 6 versions (2.5L 4-cyl, 3.3L 6-cyl), with combined economy from 19 to 23 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Century 2.5L 4-cyl Automatic 3-spd Regular 20 29 23 MPG
Century Wagon 3.3L 6-cyl Automatic 4-spd Regular 18 26 21 MPG
Century Wagon 2.5L 4-cyl Automatic 3-spd Regular 18 25 21 MPG
Century 3.3L 6-cyl Automatic 4-spd Regular 18 26 21 MPG
Century 3.3L 6-cyl Automatic 3-spd Regular 18 25 20 MPG
Century Wagon 3.3L 6-cyl Automatic 3-spd Regular 17 24 19 MPG

1989 Buick Century: engines & MPG

The 1989 Century was EPA-rated in 9 versions (2.5L 4-cyl, 2.8L 6-cyl, 3.3L 6-cyl), with combined economy from 19 to 24 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Century Wagon 2.5L 4-cyl Automatic 3-spd Regular 21 28 24 MPG
Century 2.5L 4-cyl Automatic 3-spd Regular 21 28 23 MPG
Century 2.8L 6-cyl Automatic 4-spd Regular 18 26 21 MPG
Century Wagon 2.8L 6-cyl Automatic 4-spd Regular 18 27 21 MPG
Century 3.3L 6-cyl Automatic 4-spd Regular 18 26 21 MPG
Century Wagon 3.3L 6-cyl Automatic 4-spd Regular 17 26 20 MPG
Century 3.3L 6-cyl Automatic 3-spd Regular 18 25 20 MPG
Century 2.8L 6-cyl Automatic 3-spd Regular 18 25 20 MPG
Century Wagon 3.3L 6-cyl Automatic 3-spd Regular 17 24 19 MPG

1988 Buick Century: engines & MPG

The 1988 Century was EPA-rated in 7 versions (2.5L 4-cyl, 2.8L 6-cyl, 3.8L 6-cyl), with combined economy from 20 to 24 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Century 2.5L 4-cyl Automatic 3-spd Regular 21 29 24 MPG
Century Wagon 2.5L 4-cyl Automatic 3-spd Regular 19 26 22 MPG
Century Wagon 2.8L 6-cyl Automatic 4-spd Regular 18 27 21 MPG
Century 2.8L 6-cyl Automatic 4-spd Regular 18 26 21 MPG
Century 3.8L 6-cyl Automatic 4-spd Regular 17 26 20 MPG
Century 2.8L 6-cyl Automatic 3-spd Regular 18 25 20 MPG
Century Wagon 3.8L 6-cyl Automatic 4-spd Regular 17 26 20 MPG

1987 Buick Century: engines & MPG

The 1987 Century was EPA-rated in 8 versions (2.5L 4-cyl, 2.8L 6-cyl, 3.8L 6-cyl), with combined economy from 19 to 23 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Century 2.5L 4-cyl Automatic 3-spd Regular 19 29 23 MPG
Century Wagon 2.5L 4-cyl Automatic 3-spd Regular 18 26 21 MPG
Century 2.8L 6-cyl Automatic 4-spd Regular 18 26 21 MPG
Century 2.8L 6-cyl Automatic 3-spd Regular 18 24 20 MPG
Century Wagon 2.8L 6-cyl Automatic 4-spd Regular 17 24 20 MPG
Century Wagon 3.8L 6-cyl Automatic 4-spd Regular 16 25 19 MPG
Century Wagon 2.8L 6-cyl Automatic 3-spd Regular 17 22 19 MPG
Century 3.8L 6-cyl Automatic 4-spd Regular 16 25 19 MPG

1986 Buick Century: engines & MPG

The 1986 Century was EPA-rated in 8 versions (2.5L 4-cyl, 3.8L 6-cyl, 2.8L 6-cyl), with combined economy from 19 to 23 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Century 2.5L 4-cyl Automatic 3-spd Regular 19 29 23 MPG
Century Wagon 2.5L 4-cyl Automatic 3-spd Regular 19 26 21 MPG
Century 3.8L 6-cyl Automatic 4-spd Regular 17 26 20 MPG
Century Wagon 3.8L 6-cyl Automatic 4-spd Regular 17 27 20 MPG
Century 2.8L 6-cyl Automatic 4-spd Regular 18 26 20 MPG
Century Wagon 2.8L 6-cyl Automatic 4-spd Regular 17 23 19 MPG
Century Wagon 2.8L 6-cyl Automatic 3-spd Regular 17 23 19 MPG
Century 2.8L 6-cyl Automatic 3-spd Regular 17 24 19 MPG

1985 Buick Century: engines & MPG

The 1985 Century was EPA-rated in 17 versions (4.3L 6-cyl, 2.5L 4-cyl, 3.0L 6-cyl, 3.8L 6-cyl), with combined economy from 17 to 27 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Century 4.3L 6-cyl Automatic 3-spd Diesel 23 32 27 MPG
Century Wagon 4.3L 6-cyl Automatic 3-spd Diesel 23 31 26 MPG
Century 4.3L 6-cyl Automatic 3-spd Diesel 23 32 26 MPG
Century Wagon 4.3L 6-cyl Automatic 3-spd Diesel 23 32 26 MPG
Century 2.5L 4-cyl Automatic 3-spd Regular 21 29 24 MPG
Century Wagon 2.5L 4-cyl Automatic 3-spd Regular 19 26 22 MPG
Century 3.0L 6-cyl Automatic 4-spd Regular 16 23 19 MPG
Century 3.8L 6-cyl Automatic 4-spd Regular 16 23 19 MPG
Century Wagon 3.0L 6-cyl Automatic 4-spd Regular 16 23 19 MPG
Century Wagon 3.8L 6-cyl Automatic 4-spd Regular 16 24 19 MPG
Century 3.0L 6-cyl Automatic 3-spd Regular 16 23 19 MPG
Century 3.0L 6-cyl Automatic 3-spd Regular 16 24 19 MPG
Century Wagon 3.8L 6-cyl Automatic 4-spd Regular 16 23 19 MPG
Century Wagon 3.0L 6-cyl Automatic 4-spd Regular 15 23 18 MPG
Century 3.0L 6-cyl Automatic 4-spd Regular 15 23 18 MPG
Century Wagon 3.0L 6-cyl Automatic 3-spd Regular 15 21 17 MPG
Century Wagon 3.0L 6-cyl Automatic 3-spd Regular 15 20 17 MPG

1984 Buick Century: engines & MPG

The 1984 Century was EPA-rated in 14 versions (4.3L 6-cyl, 2.5L 4-cyl, 3.0L 6-cyl, 3.8L 6-cyl), with combined economy from 17 to 25 MPG.

VersionEngineTransmissionFuelCityHwyCombined
Century 4.3L 6-cyl Automatic 3-spd Diesel 21 31 25 MPG
Century Estate Wagon 4.3L 6-cyl Automatic 3-spd Diesel 21 31 25 MPG
Century Estate Wagon 4.3L 6-cyl Automatic 4-spd Diesel 21 31 24 MPG
Century Estate Wagon 4.3L 6-cyl Automatic 3-spd Diesel 21 29 24 MPG
Century 4.3L 6-cyl Automatic 4-spd Diesel 21 31 24 MPG
Century 4.3L 6-cyl Automatic 3-spd Diesel 21 29 24 MPG
Century 2.5L 4-cyl Automatic 3-spd Regular 20 28 23 MPG
Century Estate Wagon 2.5L 4-cyl Automatic 3-spd Regular 19 26 22 MPG
Century 3.0L 6-cyl Automatic 3-spd Regular 17 24 20 MPG
Century Estate Wagon 3.8L 6-cyl Automatic 4-spd Regular 16 23 19 MPG
Century 3.8L 6-cyl Automatic 4-spd Regular 16 23 19 MPG
Century 3.0L 6-cyl Automatic 3-spd Regular 16 22 18 MPG
Century Estate Wagon 3.0L 6-cyl Automatic 3-spd Regular 15 20 17 MPG
Century Estate Wagon 3.0L 6-cyl Automatic 3-spd Regular 15 21 17 MPG

Frequently asked questions

What MPG does a Buick Century get?

Depending on year and engine, EPA combined ratings for the Century range from 20 to 27 MPG. The most efficient rated version is the 1985 model year.

What engines does the 2005 Buick Century have?

The 2005 Century was EPA-rated with 3.1L 6-cyl engines — see the 2005 table above for each version's exact city/highway figures.

Does the Buick Century require premium gas?

Some versions do: EPA lists regular gasoline and premium gasoline and diesel depending on year and engine — check your year's table above.

About this data: EPA ratings from the official U.S. DOE/EPA dataset (fueleconomy.gov), as of July 2026; refreshed monthly. Market prices and listing counts are live medians from VehiSales inventory, updated daily. How to cite: “VehiSales Research, Buick Century EPA Fuel Economy by Model Year” with a link to https://vehisales.com/research/fuel-economy/buick/century.

See also: Buick Century hub — live listings, prices & reliability · Most fuel-efficient cars by segment · Model price trends. Media inquiries: [email protected].

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