Technical Specifications
| Brand | Mercedes-Benz |
| Model | M-Class |
| Generation | M-Class (W164) |
| Type | ML 500 V8 (388 Hp) 4MATIC 7G-TRONIC |
| Start of production | 2007 |
| End of production | 2008 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | SUV |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 17.6-17.9 l/100 km (13.4 – 13.1 US mpg, 16.1 – 15.8 UK mpg, 5.7 – 5.6 km/l) |
| Fuel consumption (extra urban) | 10-10.3 l/100 km (23.5 – 22.8 US mpg, 28.2 – 27.4 UK mpg, 10 – 9.7 km/l) |
| Fuel consumption (combined) | 12.8-13.1 l/100 km (18.4 – 18 US mpg, 22.1 – 21.6 UK mpg, 7.8 – 7.6 km/l) |
| CO2 emissions | 304-311 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 5.8 sec |
| Acceleration 0 – 62 mph | 5.8 sec |
| Acceleration 0 – 60 mph | 5.5 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 4 |
| Weight-to-power ratio | 5.6 kg/Hp, 177.6 Hp/tonne |
| Weight-to-torque ratio | 4.1 kg/Nm, 242.6 Nm/tonne |
| Power | 388 Hp @ 6000 rpm |
| Power per litre | 78.1 Hp/l |
| Torque | 530 Nm @ 2800 rpm (390.91 lb.-ft. @ 2800 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 273.963 |
| Engine displacement | 4966 cm3 (303.04 cu. in.) |
| Number of cylinders | 8 |
| Engine configuration | V-engine |
| Cylinder Bore | 97 mm (3.82 in.) |
| Piston Stroke | 84 mm (3.31 in.) |
| Compression ratio | 10:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Multi-port manifold injection |
| Engine aspiration | Naturally aspirated engine |
| Engine oil capacity | 9 l (9.51 US qt | 7.92 UK qt) |
| Coolant | 12 l (12.68 US qt | 10.56 UK qt) |
| Kerb Weight | 2185 kg (4817.1 lbs.) |
| Max. weight | 2830 kg (6239.08 lbs.) |
| Max load | 645 kg (1421.98 lbs.) |
| Trunk (boot) space – minimum | 551 l (19.46 cu. ft.) |
| Trunk (boot) space – maximum | 2050 l (72.4 cu. ft.) |
| Fuel tank capacity | 95 l (25.1 US gal | 20.9 UK gal) |
| Length | 4788 mm (188.5 in.) |
| Width | 1911 mm (75.24 in.) |
| Height | 1840 mm (72.44 in.) |
| Wheelbase | 2915 mm (114.76 in.) |
| Front track | 1627 mm (64.06 in.) |
| Rear (Back) track | 1629 mm (64.13 in.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 7 gears, automatic transmission |
| Front suspension | Double wishbone |
| Rear suspension | Spring Strut |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Tires size | 255/55 R19 |
The W164 Mercedes-Benz M-Class, launched in 2005, represented a significant leap forward in terms of refinement and capability compared to its predecessor (W163). The ML 500, introduced in 2007, was the performance leader of the range, utilizing a naturally aspirated 5.0-liter V8 engine. It was designed to offer a more engaging driving experience and a higher level of luxury than the six-cylinder models. Production of this specific variant was relatively short-lived, ending in 2008, as Mercedes-Benz prepared for the next generation M-Class (W166).
Powertrain & Engine Architecture
The heart of the ML 500 is the M273.963 engine, a 4.966-liter (303.04 cubic inches) naturally aspirated V8. This engine produces 388 horsepower at 6000 rpm and 530 Nm (390.91 lb-ft) of torque at 2800 rpm. It features a three-valve-per-cylinder design (two intake, one exhaust) and utilizes multi-port fuel injection. The M273 engine is known for its smooth power delivery and relatively robust construction. The engine is longitudinally mounted in the chassis. Paired with the engine is the 7G-TRONIC automatic transmission, a seven-speed unit that provides smooth and relatively quick shifts. This transmission was a significant upgrade over older five-speed automatics, offering improved fuel efficiency and a wider range of gear ratios. The 4MATIC all-wheel-drive system distributes power to all four wheels, enhancing traction and stability, particularly in adverse weather conditions.
Driving Characteristics
The ML 500 delivers a noticeably more spirited driving experience than the ML 350 or ML 320. The V8 engine provides ample power for effortless acceleration and confident highway cruising. The 0-60 mph sprint takes approximately 5.5 seconds, making it a quick SUV for its size. The 7G-TRONIC transmission contributes to a smooth and refined driving experience, although it can sometimes feel slightly hesitant during kickdown maneuvers. The 4MATIC system provides excellent grip, inspiring confidence in various driving conditions. Compared to the manual transmission options available on the lower-trim models, the ML 500’s automatic prioritizes comfort and ease of use over outright driver engagement. The suspension is tuned for comfort, providing a relatively smooth ride, but it can feel somewhat body roll during aggressive cornering.
Equipment & Trim Levels
The ML 500 came standard with a generous array of features, reflecting its position as the range-topping model. Standard equipment included leather upholstery, heated and ventilated front seats, a premium sound system, dual-zone automatic climate control, and a power liftgate. Optional extras included a panoramic sunroof, navigation system, rear-seat entertainment system, and various driver-assistance features. Interior trim options typically included wood or aluminum accents. The ML 500’s interior was designed to provide a luxurious and comfortable environment for both driver and passengers.
Chassis & Braking
The W164 M-Class features a fully independent suspension system, with double wishbones at the front and a multi-link setup at the rear. The ML 500 typically came equipped with larger stabilizer bars compared to the lower-trim models, helping to reduce body roll. Braking duties are handled by ventilated disc brakes at all four corners, providing ample stopping power. The ML 500 also includes ABS (Anti-lock Braking System) and electronic stability control as standard safety features. The suspension tuning prioritizes ride comfort, but the ML 500 offers a reasonably composed and stable handling experience.
Market Reception & Comparison
The ML 500 was generally well-received by automotive critics, who praised its powerful engine, luxurious interior, and comfortable ride. However, some reviewers noted its relatively high fuel consumption and its somewhat cumbersome size. Compared to the ML 350, the ML 500 offered a significant performance advantage but came at a higher price. The ML 500’s fuel economy was considerably worse than the diesel-powered ML 320 CDI, but it provided a smoother and quieter driving experience. Reliability reports suggest the M273 engine is generally robust, but preventative maintenance, particularly regarding the valve stem seals (prone to oil leaks), is crucial.
Legacy
The W164 ML 500 remains a desirable SUV in the used car market, particularly for buyers seeking a blend of luxury, performance, and all-weather capability. The M273 V8 engine is known for its longevity, but regular maintenance is essential to prevent potential issues. While fuel economy is not a strong point, the ML 500 offers a compelling package for those willing to accept the higher running costs. Parts availability is generally good, and the vehicle’s relatively simple (compared to modern SUVs) mechanical design makes it a viable option for DIY mechanics. The ML 500 represents a high point in the W164 M-Class range, offering a refined and powerful driving experience that continues to appeal to enthusiasts today.
