The R171 SLK55 AMG's naturally aspirated V8 is celebrated for a glorious full-throttle sound and repeatedly called a low-mileage bargain. Owners daily-drive them with only routine maintenance, and the 2009 facelift cars are noted to make more power (lower gearing, higher compression, less restrictive exhaust) with lighter wheels.
SLK55 AMG V8: naturally aspirated sound and bargain status
Mercedes-Benz SLK / SLC · market