Mercedes-Benz · Convertible · 2002–2010
Mercedes-Benz CLK C209 Cabrio
Weaknesses, engine ratings and buying advice
★★★★★
1.9 / 5.0 · Based on 7 engine variants Most Fun Engine
457–525 PS
6.2L V8 AMG Benzin
CLK 63 AMG — V8 Coupé of the Old School
Legendary! Problem Engine
457–525 PS
6.2L V8 AMG Benzin
10 weaknesses
Stay Away!Engine Overview
The Mercedes-Benz CLK C209 Cabrio is available with 7 engine variants — from 121 to 525 hp.
CLK 200 Kompressor Engine Change
2003 2006
Stay Away! 6 weaknesses
2003 2006
Stay Away! 6 weaknesses
CLK 240
2003 2005
Be Careful 7 weaknesses
CLK 280
2005 2010
Stay Away! 6 weaknesses
CLK 350
2005 2010
Stay Away! 6 weaknesses
CLK 500 Engine Change
2003 2006
Be Careful 10 weaknesses
2006 2010
Stay Away! 9 weaknesses
CLK 55 AMG
2003 2005
Be Careful 10 weaknesses
CLK 63 AMG
2006 2010
Stay Away! 10 weaknesses
Vehicle Weaknesses
| Weakness | Cost | |
|---|---|---|
| 5G-Tronic: Coolant Ingress via Valeo Cooler Valeo transmission oil heat exchanger on pre-facelift models up to 09/2003 develops leaks. Coolant enters the transmission and destroys the clutch packs. Symptom: humming and juddering at low revs. Symptoms: Humming and juddering under light acceleration at low rpm, cloudy transmission fluid from 70,000 km | High |
Frequently Asked Questions
What problems and weaknesses does the Mercedes-Benz CLK C209 Cabrio have? +
The Mercedes-Benz CLK C209 as Cabrio has 60 known weaknesses, 6 vehicle-related.
Which engine is recommended? +
Be Careful: M111 (2.0-2.3L), M112 (3.2L V6), M113 (4.3-5.4L V8). No engine is rated 'Good Choice'.
Is the Mercedes-Benz CLK C209 Cabrio worth buying used? +
Caution is advised with the Mercedes-Benz CLK C209 Cabrio — 4 of 7 engine variants are rated 'Stay Away!'.
Last updated: February 2026 · All information without guarantee