2004 Mercedes-Benz Slk320
20MPG
Combined
2
Trims
← 2003
2004
Updated February 27, 2026
The 2004 Mercedes-Benz Slk320 Sports Car provides 19–20 combined MPG depending on trim. We’ve compiled EPA fuel economy data, NHTSA safety ratings, and recall history so you can make an informed decision.
2004 Mercedes-Benz Slk320 Specifications
| Spec | Value |
|---|---|
| Combined MPG | 19–20 combined MPG depending on trim |
| City MPG | 18 |
| Highway MPG | 24 |
| Body Style | Sports Car |
| Fuel Type | Premium |
| Drive | RWD |
| Available Trims | 2 |
Available Trims
| Trim | MPG (City/Hwy/Combined) | Engine | Transmission |
|---|---|---|---|
| Auto | 18/24/20 | 3.2L 6cyl | Automatic 5-spd |
| Man | 17/24/19 | 3.2L 6cyl | Manual 6-spd |
Annual Fuel Cost
Based on EPA estimates, the 2004 Mercedes-Benz Slk320 costs approximately $2,975 per year in fuel. This assumes 15,000 miles driven annually and current fuel prices.
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