2004 Buick Regal
21MPG
Combined
2
Trims
Updated February 27, 2026
Get the full picture on the 2004 Buick Regal. As a Sedan, it achieves 20–21 combined MPG depending on trim and has not yet been rated by NHTSA. Below you’ll find detailed specs for every trim, plus recall information and competitor comparisons.
2004 Buick Regal Specifications
| Spec | Value |
|---|---|
| Combined MPG | 20–21 combined MPG depending on trim |
| City MPG | 18 |
| Highway MPG | 28 |
| Body Style | Sedan |
| Fuel Type | Regular |
| Drive | FWD |
| Available Trims | 2 |
Available Trims
| Trim | MPG (City/Hwy/Combined) | Engine | Transmission |
|---|---|---|---|
| Auto | 18/28/21 | 3.8L 6cyl | Automatic 4-spd |
| Auto | 16/26/20 | 3.8L 6cyl | Automatic 4-spd |
Annual Fuel Cost
Based on EPA estimates, the 2004 Buick Regal costs approximately $2,500 per year in fuel. This assumes 15,000 miles driven annually and current fuel prices.
Compare the 2004 Buick Regal
See how it stacks up against similar vehicles:
Other Model Years
- 2020 Buick Regal
- 2019 Buick Regal
- 2018 Buick Regal
- 2017 Buick Regal
- 2016 Buick Regal
- 2015 Buick Regal
- 2014 Buick Regal
- 2013 Buick Regal
- 2012 Buick Regal
- 2011 Buick Regal
- 2004 (this page)
- 2003 Buick Regal
- 2002 Buick Regal
- 2001 Buick Regal
- 2000 Buick Regal
Check Vehicle History
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