(production discontinued for worldwide sale after 2012 model year)
|Assembly||Tuscaloosa, Alabama, USA|
|Class||Large MPV / Full-size CUV|
|Body style||5-door wagon or a CUV|
|Layout||Front engine, rear-wheel drive / four-wheel drive|
|Wheelbase||SWB: 2,980 mm (117.3 in)
LWB: 3,215 mm (126.6 in)
|Length||SWB: 4,922 mm (193.8 in)
LWB: 203.0 in (5,156 mm)
|Width||2006–08 & 2011-2013: 1,922 mm (75.7 in)
2009–2010: 77.1 in (1,958 mm)
|Height||SWB: 1,674 mm (65.9 in)
2006-08: 65.2 in (1,656 mm)
2009-2013 LWB: 65.4 in (1,661 mm)
|Curb weight||2,130–2,375 kg (4,700–5,240 lb)|
The R-Class is a luxury MPV offered by Daimler AG in 2006 model year under the Mercedes-Benz brand. It is the first full-sized multi-purpose vehicle ever produced by Mercedes-Benz. It was first seen at the 2001 Detroit Auto Show as the Vision GST (Grand Sports Tourer) concept, and the final production vehicle was shown at the 2005 New York International Auto Show. The R-Class is built on the W251 chassis, and is assembled in Tuscaloosa, Alabama. It is priced between the M-Class and the GL-Class. It was initially marketed by Mercedes-Benz as a "Sports Cruiser" and later as a "Family Tourer".
The R-Class is offered in two wheelbases, 2,980 mm (117.3 in) and 3,215 mm (126.6 in), the latter being the lone offering in the US.
Models using the BlueTec diesel engine were introduced for the 2009 model year in certain markets, with other markets getting Mercedes' BlueEFFICIENCY technology.
Not all engines are available in all markets.
|Model||Engine||Power||Torque||Transmission||Top Speed||0-62 mph||Economy||Emissions|
|R300 CDI||3.0 L, V6 in-V||190 PS (140 kW; 190 hp)||440 Nm (325 lb ft)||7G-Tronic||209 km/h (130 mph)||9.7 secs||34.0 mpg[clarification needed]||219 g/km|
|R350 CDI||3.5 L, V6 in-V||224 PS (165 kW; 221 hp)||510 Nm (376 lb ft)||7G-Tronic||221 km/h (137 mph)||8.8 secs||30.4 mpg||246 g/km|
|R350 BlueTEC||3.5 L, V6 in-V||213 PS (157 kW; 210 hp)||542 Nm (400 lb ft)||7G-Tronic||___ km/h (___ mph)||8.2 - 8.6 secs||20.6 mpg||___ g/km|
|R280 V6||3.0 L, V6 in-V||231 PS (170 kW; 228 hp)||___ Nm (___ lb ft)||7G-Tronic||___ km/h (___ mph)||8.1 secs||__._ mpg||___ g/km|
|R350 V6||3.5 L, V6 in-V||272 PS (200 kW; 268 hp)||350 Nm (258 lb ft)||7G-Tronic||230 km/h (143 mph)||6.9 secs||__._ mpg||___ g/km|
|R500 V8||5.5 L, V8 in-V||388 PS (285 kW; 383 hp)||___ Nm (___ lb ft)||7G-Tronic||250 km/h (155 mph)||5.8 secs||__._ mpg||___ g/km|
|R63 AMG||6.2 L, V8 in-V||510 PS (380 kW; 500 hp)||630 Nm (465 lb ft)||7G-Tronic||250 km/h (155 mph)||4.9 secs||__._ mpg||___ g/km|
Safety and security 
The R-Class scores "Good" in the Insurance Institute for Highway Safety (IIHS) front crash test. But was given an "Acceptable" rating in the side impact crash test before 2009 models built after September 2008 because the test dummy's torso faced excessive loads. For 2009 models built after September 2008, Mercedes modified the seatbelts and interior door trim and the IIHS rated the R-class "Good" overall in side impacts allowing the R-Class to receive the Top Safety Pick award.
Thatcham's New Car Whiplash Ratings (NCWR) organisation tested the R-Class for its ability to protect occupants against whiplash injuries with the car achieving the top 'Good' rating overall.
The R-Class was tested by Thatcham's New Vehicle Security Ratings (NVSR) organisation and achieved the following ratings:
2007 changes to lineup 
Mercedes-Benz announced in May 2007 that the R-Class range would be broadened. Rear-wheel drive variants became available in addition to the four-wheel-drive versions, and more flexible seating options (5, 6, or 7-seat versions) offered, AMG styling and new 3.0L engines available in the R280 (petrol) and R300 CDI (diesel).
2011 mid-generational refresh 
Sales have not met with manufacturer's expectations, having fallen well short of a planned 50,000 a year, with half of units destined for the United States. In 2007 only 13,031 vehicles were sold in the US. Poor sales of the model have been attributed to a crowded marketplace, poor marketing positioning, and fuel efficiency concerns among consumers at the time the vehicle was launched.
The lukewarm reception to the R-Class in Canada and the United States was similar to the poor sales of the Chrysler Pacifica, a large crossover produced from 2003 to 2007 by Mercedes-Benz's parent DaimlerChrysler, under the Chrysler division. Like the Pacifica, the R-Class is supposed to share the attributes of the minivan, SUV, and a wagon. Similar to Chrysler's marketing of the Pacifica which was unsuccessful, Mercedes was unable to convince the public that the R-Class was a pioneer of new category of vehicle, as consumers preferred more traditional SUV-style crossovers. Despite the R-Class being more upscale and sophisticated (compared to the Pacifica's minivan platform) with a better executed launch (while the Pacifica was plagued with production and marketing flaws), it has sold poorly compared to the GLK and M-Classes. Due to low sales, Mercedes-Benz has ceased the production of R-Class for sale in 2012 for the United States. The vehicle continues to be sold globally as of January 2013.
|Calendar year||US sales|
R63 AMG 
The AMG version of the W251, the R63 AMG, was introduced at the 2006 North American International Auto Show as a 2007 model. It features a handbuilt 6.2 L M156 V8 engine producing 503 hp (375 kW) and 465 lb·ft (630 N·m) of torque. Mercedes-Benz's 7G-Tronic seven-speed automatic transmission is standard across the R-Class lineup, with the R63's version of the gearbox featuring AMG-calibrated shift times with shifting buttons on the back of the steering wheel. The R63 AMG is electronically limited to a top speed of 155 mph (250 km/h), with 0-62 mph time of 5.0 seconds. The R63 AMG features 4MATIC all-wheel drive like the ML63 AMG.
The notion of a high-performance AMG version of the R-Class was not well-received, given the heavy weight of the vehicle, and as Mercedes-AMG in general was accused of stuffing huge engines into chassis with poor handling dynamics. Due to low sales, as the majority chose diesel-powered vehicles, the R63 was taken out of production in 2007 along with several changes in the R-Class lineup.
- "Mercedes-Benz Canada from waybackmachine". Retrieved 2012-02-23.
- "IIHS-HLDI: Mercedes R class". Iihs.org. 2009-11-18. Retrieved 2010-06-25.
- "IIHS-HLDI: Mercedes R class". Iihs.org. 2009-05-04. Retrieved 2010-06-25.
- "IIHS-HLDI: Mercedes R class". Iihs.org. Retrieved 2010-06-25.
- "Safety | New Car Whiplash Ratings | Car Search | Thatcham MIRRC". Thatcham.org. Retrieved 2011-08-02.
- "New Vehicle Security Ratings | Car Search | Car Results | Thatcham MIRRC". Thatcham.org. Retrieved 2011-08-02.
- "The Unofficial Mercedes-Benz Weblog". eMercedesBenz. 2007-05-10. Retrieved 2010-06-25.
- Ewing, Steven J. (2010-03-28). "Brawnier 2011 Mercedes-Benz R-Class leaked ahead of New York debut — Autoblog". Autoblog.com. Retrieved 2010-06-25.
- "MBUSI to produce Mercedes’ first hybrid in wake of poor R-Class reception", article published January 15 in Tuscaloosa News, http://www.tuscaloosanews.com/article/20080115/LATEST/64323222
- [W251 chassis]
- "First Drive: 2011 Mercedes-Benz R-Class". Autos.ca. 2010-07-05. Retrieved 2011-08-02.
- "Mercedes-Benz Posts Highest Sales Month for the Year With 20,025 Vehicles Sold in... - MONTVALE, N.J., Jan. 5 /PRNewswire/". New Jersey: Prnewswire.com. 2010-01-05. Retrieved 2010-06-25.
- "Highest Sales Month for the Year at 21,469 Brings Mercedes-Benz to an... - MONTVALE, N.J., Jan. 4, 2011 /PRNewswire/". New Jersey: Prnewswire.com. Retrieved 2011-08-02.
- "2005 BMW M5 vs. 2005 Mercedes-Benz e55 AMG - Full Metal Rockets - Luxury Road Test". Motor Trend. 2010-12-13. Retrieved 2011-08-02.
- "2009 Mercedes-Benz SL-Class Reviews, Expert Car Reviews on AOL Autos". Autos.aol.com. Retrieved 2011-08-02.
- "First Drive: 2007 Mercedes-Benz R63 AMG 4Matic". Insideline.com. 2006-08-28. Retrieved 2011-08-02.
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