The Mercedes-Benz M-Class is a luxury mid-size sport utility vehicle (SUV), first offered in 1997 as a 1998 model, and built by the German automaker Mercedes-Benz. Gradually, the M-Class became a sales success in the United States and Mexico. In terms of size, it is slotted in between the smaller GLK-Class (based on the C-Class) and the larger GL-Class, with which it shares platforms. For a short time, between the years 1999 to 2002, the M class was also built by Magna Steyr in Graz, Austria, for the European market, until it moved to part of the U.S. market.W163 (1997–2005)
The Mercedes-Benz W163 M-Class SUV was introduced in 1997 for the 1998 model year. It is a midsized body-on-frame suv with seating for 5 or 7 with an optional third-row seat. The M-Class was the first luxury SUV to feature stability control, a system designed to detect loss of control and instantaneously intervene with selective braking to bring the vehicle back on its intended course. This system is now hailed by safety experts, and studies have shown stability control and systems like it are capable of reducing single vehicle crashes by up to 30 percent. Furthermore, the M-Class boasted front- and side-impact airbags with advanced occupant detection for the front passenger seat, which, combined with Mercedes' legendary safety structure, earned the M-Class the highest marks in insurance industry crash tests.
W164 (2005–present)
The redesigned M-class (chassis name W164) was introduced in April 2005 as a 2006 model after a showing at the North American International Auto Show in January. It was almost entirely new, with a more sporting, aerodynamic look—the coefficient of drag is down to 0.34. Mercedes-Benz has also made the new M-Class larger, measuring 150 mm longer than the first model. The M-Class was named "Best New Sport Utility Vehicle" in the 2006 Canadian Car of the Year awards.Mercedes-Benz extensively publicized the US$600 million spent to update its factory and add manufacturing space for the new R-Class. According to early automotive press reports, the 2006 M-Class vehicles demonstrate vast improvements in quality.
The W164 platform used for the new M-Class is shared with the new GL-Class and is a unibody type rather than the former (W163) body-on-frame used by the M-Class vehicles produced from 1998–2005. The X164 GL-CLass, a longer seven-seater version of the W164 platform, is also available.
ML63 AMG
The AMG version of the W164, the ML63 AMG, was introduced at the 2006 North American International Auto Show as a limited edition 2007 model. It features a 6.2 L M156 V8 engine producing 510 hp (380 kW) and 465 lb·ft (630 N·m) that is handcrafted in Germany. The engine is added to an AMG Speedshift 7G-Tronic seven-speed automatic transmission. The 2006 ML63 AMG can accelerate from 0–60 mph (96 km/h) in just 4.8 seconds, or from 0–62 mph (100 km/h) in just 5.0 seconds. These impressive features made the ML 63 AMG the most powerful naturally aspırated V8 SUV in the world.ML450 Hybrid
At the 2009 New York International Auto Show, Mercedes-Benz showed their ML450 Hybrid SUV, which was announced on April 8, 2009. The ML450 Hybrid consumes almost 50% less fuel than the ML550 does, even though it produces over 90% of the power generated by the V8 model. Total power generated will be 335 hp (250 kW) and 381 lb·ft (517 N·m) of torque, while getting 24 mpg-US (9.8 L/100 km; 29 mpg-imp) on the highway and 21 mpg-US (11 L/100 km; 25 mpg-imp) in the city, according to United States Environmental Protection Agency (EPA) estimates. The engine itself runs on the Atkinson cycle and by itself makes 275 hp. The ML 450 was developed under the Global Hybrid Cooperation, and will only be available in the United States under lease. 2011 For the 2011 model year the Mercedes Benz ML lineup will be completely redesigned, final versions of the vehicle have not been released. It also comes with a continuously variable transmission.