Head to head
Mercedes-Benz SLK-Class vs Porsche Cayenne
The Mercedes-Benz SLK-Class is a two-seat folding hard-top roadster. The Porsche Cayenne is a performance suv.
Last reviewed 13 September 2026
Specifications side by side
| Mercedes-Benz SLK-Class | Porsche Cayenne | |
|---|---|---|
| 0-60mph | 5.8 seconds (SLK300) to 4.5 seconds (AMG SLK55) | 4.4-5.7 seconds depending on engine |
| SLK300 power | 241hp | - |
| SLK350 power | 302hp | - |
| AMG SLK55 power | 415hp | - |
| Boot capacity | 10.1cu ft roof up, 6.4cu ft roof down | - |
| Seats | - | 4-5 |
| Engine | - | 3.0 litre petrol 353bhp, up to 4.0 litre GTS 500bhp |
| Boot space | - | 592-772 litres (seats up), 1,502-1,710 litres (seats down) |
Sources: Mercedes-Benz SLK-Class, Porsche Cayenne. Figures vary by model year and options, so check with the supplier before you commit.
Buy or hire the SLK-Class if...
A compact two-seat roadster with a folding metal hard-top, popular on the used and specialist rental market as an affordable sunny-day convertible. Later replaced by the SLC.
Listed by
Buy or hire the Cayenne if...
A performance SUV hired by drivers wanting sports car pace and handling combined with practical space and ride height, rather than a low-slung sports car.
Listed by
- Starr Luxury Cars - London
Common questions
What is the difference between the Mercedes-Benz SLK-Class and the Porsche Cayenne?
The Mercedes-Benz SLK-Class is a two-seat folding hard-top roadster; the Porsche Cayenne is a performance SUV.
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