The 2006 Mercedes-Benz CLS500 is equipped with the M113 5.0L naturally aspirated V8 engine, producing 302 horsepower and 339 lb-ft of torque. This aluminum-block engine features single overhead cam design with three valves per cylinder and variable valve timing. The M113 is known for its smooth power delivery and refined operation, paired with Mercedes’ 7G-Tronic seven-speed automatic transmission. This engine provides strong acceleration with 0-60 mph times around 5.4 seconds while maintaining reasonable fuel economy for its class. The M113 requires premium fuel and benefits from regular maintenance including quality oil changes every 10,000 miles as specified by Mercedes-Benz service intervals.

The 2006 CLS500 shares many components with other first-generation CLS models from 2006-2011, though some parts changed during mid-cycle updates. Engine components from the M113 5.0L are compatible across 2006-2009 CLS500 models and also interchange with E500, S500, and SL500 models using the same engine. Body panels and interior trim are specific to 2006-2008 models, as Mercedes updated styling elements for 2009. Suspension components, particularly the Airmatic system, are compatible throughout 2006-2011. Transmission parts from the 7G-Tronic are widely compatible with other Mercedes models from this era. Always verify part numbers as Mercedes made running changes throughout production years.

Parts availability changes daily. Call us at (603) 392-7313 or visit our online shop to check current inventory from this specific vehicle. If we have sold a part you need, our Parts Broker service can source it from our network of partner yards nationwide.

Yes! We ship parts from this vehicle and our entire inventory nationwide. Most orders ship within 1-2 business days via FedEx or freight carriers for larger components like engines and transmissions. Call (603) 392-7313 for a shipping quote on any part.

The M113 5.0L V8 is generally considered one of Mercedes’ more reliable engines from this era, with proper maintenance being crucial for longevity. The engine typically runs well beyond 200,000 miles when serviced regularly with quality oil and filters. Common maintenance items include spark plugs every 100,000 miles, air filters, and keeping up with oil changes using Mercedes-approved 0W-40 synthetic oil. The balance shaft system requires attention around 100,000-150,000 miles, and the engine mounts should be inspected periodically. Overall, this engine is more dependable than the later direct-injection V8s, though it requires premium fuel and benefits from using genuine Mercedes parts for major services.