UNUSUAL CARS MODEL GUIDE
The Mercedes-Benz CLS 55 AMG C219 combined the first-generation CLS four-door coupé body with AMG’s supercharged 5.4-litre M113K V8. With 350 kW (476 PS), 700 Nm and a five-speed automatic gearbox, it delivered supercar pace in one of Mercedes’ most distinctive early-2000s shapes.
Quick answer: The CLS 55 AMG is the short-lived, supercharged version of the original CLS. Its strengths are huge low-speed torque, hydraulic steering and understated design; buyers should prioritise corrosion, service history, cooling, supercharger operation, air suspension, brakes, gearbox behaviour and the condition of model-specific trim.
Featured photograph by Calreyn88, CC BY-SA 4.0, via Wikimedia Commons; locally hosted and cropped to 1200 × 675 pixels.
Why the CLS 55 AMG matters
The C219 CLS turned the 2003 Vision CLS concept into a production car and helped popularise the four-door coupé idea. AMG’s version arrived with the hand-built M113K engine already proven in the E55 and SL55. Mercedes-Benz records 350 kW and a 0–100 km/h time of 4.7 seconds for the CLS 55 AMG.
M113K engine and five-speed transmission
The 5,439 cc V8 uses an intercooled supercharger to produce its broad 700 Nm torque plateau. AMG retained the durable five-speed automatic because it could handle the engine’s output at a time when the newer seven-speed unit was not used for the highest-torque applications. Performance feels immediate rather than peaky, which suits the CLS’s long-distance character.
| Specification | CLS 55 AMG C219 |
|---|---|
| Engine | 5.4-litre supercharged M113K V8 |
| Power | 350 kW / 476 PS |
| Torque | 700 Nm |
| Transmission | Five-speed AMG Speedshift automatic |
| Drive | Rear-wheel drive |
| 0–100 km/h | 4.7 seconds |
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CLS 55 AMG versus CLS 63 AMG
The CLS 55 was replaced quickly by the naturally aspirated CLS 63 AMG. The later car gained the 6.2-litre M156 V8 and a seven-speed transmission, while the 55 retained the forced-induction shove and five-speed drivetrain familiar from other supercharged AMG models. Neither is simply better: the 55 is valued for torque and relative mechanical simplicity, while the 63 offers a sharper-revving engine and newer gearbox.
Chassis, air suspension and everyday use
AMG recalibrated the Airmatic suspension, braking system, steering and stability control. The result remains a heavy luxury car, but one with unusually strong cross-country pace. Four individual seats and a relatively narrow rear opening make it less practical than an E-Class, yet the hatch-like boot lid and long cabin still support genuine touring use.
Mercedes CLS 55 AMG buying guide
Start with the body and underside. Check wheelarches, lower doors, boot edges, suspension mounting areas and brake pipes for corrosion. The M113K has a strong reputation, but age makes coolant leaks, intercooler-pump weakness, oil leaks, worn pulleys and neglected auxiliary belts important checks. Confirm that the supercharger engages smoothly and that temperatures remain stable under load.
Airmatic should raise, lower and hold level without warnings or sinking overnight. Listen for compressor strain and suspension knocks. The automatic should engage promptly and shift cleanly when cold and hot. Large brakes and tyres are expensive, so measure remaining life rather than judging appearance alone. Test every seat, window, climate-control function and electronic convenience feature, then verify the VIN, service history and factory AMG equipment.
Why it is becoming collectible
The CLS 55 AMG was offered for a brief period before the 63 replaced it. That gives it a clear identity: the original CLS design paired with the last supercharged large-capacity AMG V8. Good, standard cars are increasingly difficult to find because low purchase prices once encouraged modification and deferred maintenance.
Research sources
Continue the Mercedes-Benz story
Explore the Rare & Performance Mercedes-Benz hub, then compare the E55 AMG W211 and C63 AMG W204.
Frequently asked questions
What engine is in the CLS 55 AMG?
It uses AMG’s 5.4-litre supercharged M113K V8.
How much power does the CLS 55 AMG have?
Mercedes-Benz rated it at 350 kW, or 476 PS, with 700 Nm of torque.
Is the CLS 55 AMG supercharged?
Yes. Its mechanically driven supercharger gives strong torque from low engine speeds.
What replaced the CLS 55 AMG?
The naturally aspirated 6.2-litre CLS 63 AMG replaced it in the first-generation CLS range.
What should buyers check first?
Check corrosion, cooling and supercharger systems, Airmatic suspension, transmission behaviour, brakes, tyres and complete AMG-specific equipment.
