Buick Century MPG and Fuel Economy
Buick have been manufacturing models of Century for 21 years, with the latest vehicle in 2005 having a combined MPG of 21.
The estimated fuel cost for the 2005 Buick Century is $3,000 per year.
Government regulators have estimated that value based on 15,000 miles driven per year, using regular gasoline, and a split of 55% city driving and 45% highway driving.
💵 Compared to an average vehicle over 5 years, you will spend $3,500 more on fuel driving a 2005 Buick Century.
🛢 The Buick Century will consume roughly 14 barrels of petroleum per year, using the standard estimate of 15,000 miles per year.
💨 For every mile driven, the Buick Century will emit -1 grams of CO2, which is about -15,000 grams of CO2 per year.
🌳 To help you understand the impact of this, a normal tree will absorb around 21,000 grams of CO2 per year. This means that roughly 1 tree would be needed to offset emissions from the Buick Century.
The table below is a complete list of the 21 Buick Century fuel efficiency specifications we have data for.
Click any vehicle link to see a more detailed breakdown of the car, miles per gallon, emissions, and more.
| Vehicle | Combined MPG | Fuel Cost |
|---|---|---|
| 2005 Buick Century | 21 | $3,000 |
| 2004 Buick Century | 21 | $3,000 |
| 2003 Buick Century | 21 | $3,000 |
| 2002 Buick Century | 21 | $3,000 |
| 2001 Buick Century | 21 | $3,000 |
| 2000 Buick Century | 21 | $3,000 |
| 1999 Buick Century | 21 | $3,000 |
| 1998 Buick Century | 21 | $3,000 |
| 1996 Buick Century | 24 | $2,600 |
| 1995 Buick Century | 20 | $3,150 |
| 1994 Buick Century | 24 | $2,600 |
| 1993 Buick Century | 23 | $2,700 |
| 1992 Buick Century | 22 | $2,850 |
| 1991 Buick Century | 22 | $2,850 |
| 1990 Buick Century | 23 | $2,700 |
| 1989 Buick Century | 23 | $2,700 |
| 1988 Buick Century | 24 | $2,600 |
| 1987 Buick Century | 23 | $2,700 |
| 1986 Buick Century | 23 | $2,700 |
| 1985 Buick Century | 19 | $3,300 |
| 1984 Buick Century | 23 | $2,700 |
Link To or Reference This Page
If you use this page in your research, please reference MPG Buddy as the source.
<a href="https://mpgbuddy.com/cars/buick/century">Buick Century MPG and Fuel Economy</a>
"Buick Century MPG and Fuel Economy." MPG Buddy. Accessed on January 3, 2026. https://mpgbuddy.com/cars/buick/century.
"Buick Century MPG and Fuel Economy." MPG Buddy, https://mpgbuddy.com/cars/buick/century. Accessed January 3, 2026.
Buick Century MPG and Fuel Economy. MPG Buddy. Retrieved from https://mpgbuddy.com/cars/buick/century.