Car Cover For Mercedes-Benz CLK 320 Guaranteed Fit ... Store ratings and product reviews are. While far less costly, the $47,200 CLK320 Cabriolet still isn't affordable for the average working guy or gal. After all, it's derived from the fairly new CLK coupe, which costs $40,600 with a 215-horsepower V-6 and $47,900 with a new 275-horsepower V-8. I have a 2006 CLK 350 that I love, keyless go, xenon, nav, designo paint, etc. Very reliable too, it's got 140,000 miles, and the only major repair I've ever had to do was the AC fan, which I think was a $1,000 job. I have the check engine light on and I get vibration from the engine at idle and even more in reverse because of low rpm.