The Mercedes-Benz E 400 V6 3.5 (333 Hp) 7G-TRONIC PLUS, part of the S212 E-Class T-modell (estate) facelift introduced in 2013, represented a high-performance variant within the fifth generation of the E-Class. Production spanned from July 2014 to July 2016. This model combined a potent 3.5-liter V6 engine with the smooth-shifting 7G-TRONIC PLUS seven-speed automatic transmission, offering a blend of luxury, practicality, and spirited driving dynamics. It occupied a premium position in the E-Class wagon lineup, positioned above the four-cylinder models and below the performance-oriented AMG variants.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | E-class |
| Generation | E-class T-modell (S212, facelift 2013) |
| Type (Engine) | E 400 V6 3.5 (333 Hp) 7G-TRONIC PLUS |
| Start of production | July, 2014 |
| End of production | July, 2016 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (economy) – urban (NEDC) | 9.6-9.8 l/100 km (24.5 – 24 US mpg, 29.4 – 28.8 UK mpg, 10.4 – 10.2 km/l) |
| Fuel consumption (economy) – extra urban (NEDC) | 5.8-5.9 l/100 km (40.6 – 39.9 US mpg, 48.7 – 47.9 UK mpg, 17.2 – 16.9 km/l) |
| Fuel consumption (economy) – combined (NEDC) | 7.2-7.4 l/100 km (32.7 – 31.8 US mpg, 39.2 – 38.2 UK mpg, 13.9 – 13.5 km/l) |
| CO2 emissions (NEDC) | 168-172 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 5.4 sec |
| Acceleration 0 – 62 mph | 5.4 sec |
| Acceleration 0 – 60 mph | 5.1 sec |
| Maximum speed | 250 km/h (155.34 mph), Electronically limited |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 5.4 kg/Hp, 184 Hp/tonne |
| Weight-to-torque ratio | 3.8 kg/Nm, 265.2 Nm/tonne |
| Power | 333 Hp @ 5250-6000 rpm |
| Power per litre | 95.2 Hp/l |
| Torque | 480 Nm @ 1200-4000 rpm (354.03 lb.-ft. @ 1200-4000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 276.850 |
| Engine displacement | 3498 cm3 (213.46 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Cylinder Bore | 92.9 mm (3.66 in.) |
| Piston Stroke | 86 mm (3.39 in.) |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | BiTurbo, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 6.5 l (6.87 US qt | 5.72 UK qt) |
| Coolant | 10.3 l (10.88 US qt | 9.06 UK qt) |
| Kerb Weight | 1810 kg (3990.37 lbs.) |
| Max. weight | 2460 kg (5423.37 lbs.) |
| Max load | 650 kg (1433 lbs.) |
| Trunk (boot) space – minimum | 695 l (24.54 cu. ft.) |
| Trunk (boot) space – maximum | 1950 l (68.86 cu. ft.) |
| Fuel tank capacity | 59 l (15.59 US gal | 12.98 UK gal) |
| Max. roof load | 100 kg (220.46 lbs.) |
| Permitted trailer load with brakes (12%) | 2100 kg (4629.71 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 84 kg (185.19 lbs.) |
| Length | 4905 mm (193.11 in.) |
| Width | 1854 mm (72.99 in.) |
| Width including mirrors | 2071 mm (81.54 in.) |
| Height | 1507 mm (59.33 in.) |
| Wheelbase | 2874 mm (113.15 in.) |
| Front track | 1583 mm (62.32 in.) |
| Rear (Back) track | 1604 mm (63.15 in.) |
| Front overhang | 849 mm (33.43 in.) |
| Rear overhang | 1182 mm (46.54 in.) |
| Minimum turning circle (turning diameter) | 11.28 m (37.01 ft.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the rear wheels of the vehicle. |
| Drive wheel | Rear wheel drive |
| Number of gears and type of gearbox | 7 gears, automatic transmission G-TRONIC PLUS |
| Front suspension | Coil spring, Independent multi-link suspension, Transverse stabilizer, Air Suspension – Optional |
| Rear suspension | Independent multi-link suspension, Air suspension, Transverse stabilizer |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | Front wheel tires: 245/45 R17; 245/40 R18; 245/35 R19Rear wheel tires: 245/45 R17; 245/40 R18; 265/35 R18; 275/30 R19 |
| Wheel rims size | Front wheel rims: 8J x 17; 8.5J x 18; 8.5J x 19Rear wheel rims: 8J x 17; 8.5J x 18; 9J x 18; 9.5J x 19 |
Powertrain & Engine Architecture
The heart of the E 400 V6 was the M276.850 3.5-liter V6 engine. This engine featured direct fuel injection and twin turbochargers, delivering a substantial 333 horsepower and 480 Nm (354 lb-ft) of torque. The engine utilized a sophisticated multi-point fuel injection system and a double overhead camshaft (DOHC) valvetrain. The 7G-TRONIC PLUS seven-speed automatic transmission was specifically tuned to handle the engine’s power output, offering smooth and responsive gear changes. This transmission was known for its efficiency and ability to adapt to driving conditions. The engine was mounted longitudinally in the front of the vehicle, driving the rear wheels.
Driving Characteristics
The E 400 V6 offered a noticeably more engaging driving experience compared to the base E-Class models. Acceleration from 0 to 60 mph was achieved in approximately 5.1 seconds, and the electronically limited top speed of 155 mph provided ample performance. The 7G-TRONIC PLUS transmission contributed to a refined driving experience, with seamless gear shifts and a wide range of gear ratios. While not as overtly sporty as the AMG variants, the E 400 V6 provided a comfortable yet capable driving experience, well-suited for both long-distance cruising and spirited driving. The rear-wheel drive configuration offered a balanced feel, although traction could be a concern in adverse weather conditions.
Equipment & Trim Levels
The E 400 V6 typically came well-equipped with standard features such as leather upholstery, automatic climate control, a premium sound system, and a host of safety technologies. Optional extras included features like a panoramic sunroof, advanced driver-assistance systems (such as lane keeping assist and adaptive cruise control), and upgraded interior trim options. The interior design was characterized by Mercedes-Benz’s signature luxury and attention to detail, with high-quality materials and a user-friendly infotainment system.
Chassis & Braking
The S212 E-Class T-modell featured a sophisticated suspension system designed to provide a comfortable ride and precise handling. The E 400 V6 typically came equipped with a multi-link independent suspension at both the front and rear. Ventilated disc brakes were standard on all four wheels, providing ample stopping power. Anti-lock braking system (ABS) and electronic stability control were also standard features, enhancing safety and control. Optional air suspension was available, offering adjustable ride height and improved comfort.
Market Reception & Comparison
The E 400 V6 was generally well-received by automotive critics, who praised its powerful engine, smooth transmission, and luxurious interior. It was often seen as a sweet spot in the E-Class lineup, offering a significant performance upgrade over the base models without the higher price tag and more aggressive character of the AMG variants. Fuel economy was respectable for a vehicle of its size and performance, averaging around 32.7 mpg combined. Compared to the E 350, the E 400 V6 offered a substantial power increase, while the E 63 AMG provided even more performance but at a significantly higher cost.
Legacy
The M276 engine family, including the 3.5-liter variant found in the E 400 V6, has proven to be relatively reliable, although preventative maintenance is crucial. Common issues can include oil leaks and occasional problems with the turbochargers. On the used car market, the E 400 V6 T-modell remains a desirable option for buyers seeking a luxurious and capable estate car. Its combination of performance, practicality, and refinement continues to appeal to enthusiasts and families alike. The 7G-TRONIC PLUS transmission is also known for its durability, contributing to the long-term reliability of this variant.
