Yes—the Chrysler Crossfire SRT-6 was built on the first-generation Mercedes-Benz SLK (R 170) platform and used closely related Mercedes mechanicals. Its supercharged V-6 traced to the AMG-developed engine used in the SLK 32 AMG, but the Crossfire was not simply an SLK 32 AMG with different bodywork: Chrysler/SRT gave it its own output rating, chassis equipment and identity. A period test found it quick and grippy, yet uncomfortably stiff on rough roads.
What “Mercedes underneath” means—and what it doesn’t
The Crossfire arrived during the DaimlerChrysler era, drawing on the first-generation Mercedes-Benz SLK, known as the R 170. Mercedes-Benz’s history of the SLK R 170 establishes the generation; Car and Driver’s contemporary road test characterized the Crossfire as sharing the SLK’s “skeleton and muscle.” That supports describing the cars as platform relatives with closely related mechanical foundations—not claiming that every component was identical.
The AMG connection is most precise when applied to the engine’s lineage. Car and Driver reported that the Crossfire SRT-6’s supercharged V-6 came from AMG’s Affalterbach shop and had also appeared in the Mercedes-Benz SLK 32 AMG and C32 AMG. Chrysler’s model still had its own badge, styling details and SRT tuning.
Crossfire SRT-6 versus SLK 32 AMG
| Comparison | Chrysler Crossfire SRT-6 | Mercedes-Benz SLK 32 AMG |
|---|---|---|
| Foundation | First-generation SLK R 170 platform roots; closely related mechanicals, as described by Car and Driver. | Member of the R 170 SLK generation, identified in Mercedes-Benz’s history. |
| Engine and stated output | Supercharged, intercooled 3.2-liter V-6; 330 hp and 310 lb-ft in Car and Driver’s 2004 test. | Related AMG-developed engine; 349 hp, according to Car and Driver’s comparison. |
| Transmission | Five-speed automatic; Chrysler’s 2006 specification sheet lists no manual option, and Car and Driver noted the lack of a manual. | Transmission availability not stated in the cited comparison. |
| Identity and setup | Chrysler coupe or roadster with SRT-specific suspension, brakes, wheels, tires and body details. | Mercedes-Benz AMG model; a full equipment comparison is not established by the cited sources. |
The power figures are not interchangeable. Car and Driver’s tested Crossfire was rated at 330 hp, while the publication cited 349 hp for the SLK 32 AMG. That difference, alongside the Crossfire’s Chrysler-specific chassis and exterior details, is why “an AMG SLK clone” is too simple a description.
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What Chrysler changed for the SRT-6
Chrysler described the 2006 SRT-6 as using a 330-hp supercharged, intercooled V-6 and SRT-tuned suspension, braking and styling. Its 2006 Crossfire SRT-6 specification sheet lists the key hardware:
- Rear-wheel drive and a five-speed automatic transmission.
- Front A-arm and rear five-link independent suspension.
- Vented brakes measuring 13 inches at the front and 11.8 inches at the rear.
- Staggered 18-inch front and 19-inch rear wheels.
Car and Driver’s period test also describes firmer suspension tuning, performance tires and a fixed rear wing. Together, the mechanical and visual changes made the SRT-6 more than a powertrain transplant, even though its basic engineering relationship to the SLK was real.
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Why the SRT-6 could feel divisive
Car and Driver’s August 2004 test of a 2004 Crossfire SRT-6 coupe recorded quick acceleration and strong grip, but also a ride that could punish ordinary pavement. The review praised stable cornering and the brakes, while reporting that the car hopped over sectioned concrete and hit hard over railroad crossings and rough surfaces. Those are one publication’s test impressions, not a claim about every owner’s experience.
The same test produced these instrumented results:
- 0–60 mph: 5.1 seconds.
- 0–100 mph: 12.4 seconds.
- Standing quarter-mile: 13.5 seconds at 107 mph.
- Top speed: 154 mph, limited by the governor.
- Skidpad: 0.90 g.
- Braking from 70 mph: 157 feet.
Each figure is from Car and Driver’s test of its 2004 coupe; it is not a manufacturer guarantee. The mix of strong performance and a rough-road ride, plus the automatic-only transmission, gives the “divisive” label a concrete basis without turning one review into a universal verdict.
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Which description is most accurate?
- Accurate: The Crossfire SRT-6 had R 170 SLK platform roots and closely related Mercedes mechanicals.
- Accurate with qualification: Its supercharged V-6 was related to the AMG-developed engine in the SLK 32 AMG; Car and Driver reported 330 hp for the Crossfire and 349 hp for the SLK.
- Misleading: Calling it a complete SLK 32 AMG under Chrysler bodywork. The shared foundation does not establish that every part was identical, and the SRT-6 had Chrysler-specific details and tuning.
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