The Mercedes-Benz C-Class T-modell (S205), specifically the C 300 variant with 258 horsepower and EQ Boost technology paired with the 9G-TRONIC automatic transmission, represents a significant evolution in the premium compact executive estate market. Produced from 2018 to 2021 as part of the S205 facelift, this model blended performance, efficiency, and practicality within the C-Class range. It occupied a mid-to-upper position in the lineup, offering a step up in power and technology from the base C 200 models while remaining more accessible than the performance-oriented AMG variants.
Technical Specifications
| Brand | Mercedes-Benz |
| Model | C-Class |
| Generation | C-Class T-modell (S205, facelift 2018) |
| Type | C 300 (258 Hp) EQ Boost 9G-TRONIC |
| Start of production | 2018 |
| End of production | 2021 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption at Low speed (WLTP) | 7.2 l/100 km (32.7 US mpg) |
| Fuel consumption at very high speed (WLTP) | 8.2 l/100 km (28.7 US mpg) |
| CO2 emissions (WLTP) | 164-186 g/km |
| Fuel consumption (economy) – urban | 8.9-9.3 l/100 km (26.4 – 25.3 US mpg) |
| Fuel consumption (economy) – extra urban | 5.2-5.7 l/100 km (45.2 – 41.3 US mpg) |
| Fuel consumption (economy) – combined | 6.6-7.0 l/100 km (35.6 – 33.6 US mpg) |
| CO2 emissions | 150-160 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 6 sec |
| Acceleration 0 – 62 mph | 6 sec |
| Acceleration 0 – 60 mph | 5.7 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 5.9 kg/Hp |
| Weight-to-torque ratio | 4.1 kg/Nm |
| Electric motor power | 14 Hp |
| Power | 258 Hp |
| Torque | 370 Nm @ 1800-4000 rpm (272.9 lb.-ft. @ 1800-4000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | M 264.920 |
| Engine displacement | 1991 cm3 (121.5 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Turbocharger, Intercooler |
| Engine oil capacity | 6.6 l (6.97 US qt | 5.81 UK qt) |
| Coolant capacity | 8.6 l (9.09 US qt | 7.57 UK qt) |
| Kerb Weight | 1535 kg (3384.1 lbs.) |
| Max. weight | 2200 kg (4850.17 lbs.) |
| Max load | 665 kg (1466.07 lbs.) |
| Fuel tank capacity | 66 l (17.44 US gal | 14.52 UK gal) |
| Permitted trailer load with brakes (12%) | 1800 kg (3968.32 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Length | 4702 mm (185.12 in.) |
| Width | 1810 mm (71.26 in.) |
| Height | 1457 mm (57.36 in.) |
| Wheelbase | 2840 mm (111.81 in.) |
| Front track | 1584 mm (62.36 in.) |
| Front overhang | 790 mm (31.1 in.) |
| Rear overhang | 1072 mm (42.2 in.) |
| Ride height (ground clearance) | 92 mm (3.62 in.) |
| Drivetrain Architecture | Rear wheel drive. MHEV. ICE and electric motor drive the rear wheels. |
| Number of gears and type of gearbox | 9 gears, automatic transmission G-TRONIC |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
Powertrain & Engine Architecture
At the heart of the C 300 T-modell lies the M 264 1.991-liter inline-four cylinder engine. This engine is a key component of Mercedes-Benz’s modular engine family, known for its efficiency and power density. It utilizes direct fuel injection and a single turbocharger with an intercooler to produce 258 horsepower and 370 Nm (272.9 lb-ft) of torque between 1800 and 4000 rpm. The “EQ Boost” system adds a 48-volt mild hybrid system, incorporating a belt-driven starter-generator. This system allows for functions like extended coasting, regenerative braking, and a smoother start/stop experience, contributing to improved fuel economy. The 9G-TRONIC nine-speed automatic transmission is standard, offering smooth and efficient gear changes. This transmission is known for its wide gear ratio spread, optimizing both fuel economy and performance.
Driving Characteristics
The C 300 T-modell with the 9G-TRONIC transmission delivers a refined and comfortable driving experience. While not as overtly sporty as the AMG variants, the 258 hp engine provides ample power for everyday driving and overtaking maneuvers. The 0-60 mph acceleration time of around 5.7 seconds is respectable for a luxury estate. The 9G-TRONIC transmission is generally smooth and responsive, although some drivers may find it occasionally hesitant during quick downshifts. The EQ Boost system subtly enhances responsiveness, particularly during acceleration from a standstill. Compared to the C 200 models, the C 300 offers a noticeable improvement in performance, while the manual transmission options (available in other C-Class models) provide a more engaging, albeit less refined, driving experience.
Equipment & Trim Levels
The C 300 T-modell came well-equipped as standard. Typical features included Mercedes-Benz’s MBUX infotainment system with a touchscreen display, leather upholstery, automatic climate control, and a suite of driver-assistance systems such as automatic emergency braking and lane-keeping assist. Optional extras included a panoramic sunroof, premium sound system, head-up display, and advanced driver-assistance packages offering features like adaptive cruise control and blind-spot monitoring. Interior trim options ranged from aluminum to wood finishes, allowing for a degree of personalization. The estate body style itself provided a generous amount of cargo space, making it a practical choice for families and those needing to transport larger items.
Chassis & Braking
The S205 C-Class T-modell utilized a four-wheel independent suspension system, providing a comfortable ride and good handling characteristics. The C 300 typically featured slightly stiffer suspension components compared to the base models, enhancing body control. Braking duties were handled by ventilated discs on all four wheels, providing ample stopping power. ABS (Anti-lock Braking System) and electronic stability control were standard safety features. The steering system employed an electric power steering setup, offering a balance between assistance and feedback.
Market Reception & Comparison
The C 300 T-modell was generally well-received by automotive critics. It was praised for its refined interior, comfortable ride, and efficient powertrain. The EQ Boost system was seen as a positive addition, contributing to improved fuel economy and a smoother driving experience. Compared to rivals like the BMW 3 Series Touring and Audi A4 Avant, the C 300 offered a compelling combination of luxury, practicality, and technology. Fuel economy figures of 33.6-35.6 US mpg combined were competitive within its segment. Reliability reports have been generally positive, although some owners have reported minor issues with the infotainment system.
Legacy
The Mercedes-Benz C 300 T-modell (S205, facelift) represents a well-rounded and technologically advanced estate car. The M 264 engine and 9G-TRONIC transmission have proven to be reliable powertrains, and the EQ Boost system foreshadowed the wider adoption of mild-hybrid technology. On the used car market, these models hold their value reasonably well, particularly those with low mileage and a comprehensive service history. They continue to appeal to buyers seeking a premium, practical, and efficient estate car with a touch of luxury.
