Mercedes-Benz C-class (W206, facelift 2026) C 300 (258 Hp) EQ Boost 9G-TRONIC | Technical specs, data, fuel consumption, Dimensions

2027 Mercedes-Benz C-class (W206, facelift 2026) - Photo 1

Key specs

Mercedes-Benz C-class (W206, facelift 2026) C 300 (258 Hp) EQ Boost 9G-TRONIC /Sedan 2026 - /

What is the body type of Mercedes-Benz C-class (W206, facelift 2026)?

Sedan, 4 Doors, 5 Seats

What is the fuel consumption and economy of Mercedes-Benz C-class (W206, facelift 2026) C 300 (258 Hp) EQ Boost 9G-TRONIC?

6.3-7 l/100 km
37.3 - 33.6 US mpg
44.8 - 40.4 UK mpg
15.9 - 14.3 km/l

How environmentally friendly is Mercedes-Benz C-class C 300 (258 Hp) EQ Boost 9G-TRONIC?

144-159 g/km CO₂
Euro 7

How fast is 2026 C-class (W206, facelift 2026) C 300 (258 Hp) EQ Boost 9G-TRONIC?

250 km/h | 155 mph
0-100 km/h: 6.1 sec
0-60 mph: 5.8 sec

What is the power output of Mercedes-Benz C-class Sedan 2026 C 300 (258 Hp) EQ Boost 9G-TRONIC?

258 Hp, 400 Nm
295 lb.-ft.

What is the engine displacement of Mercedes-Benz C-class Sedan 2026 C 300 (258 Hp) EQ Boost 9G-TRONIC?

2.0 l
1999 cm³
121.99 cu. in.

What is the number of cylinders in 2026 Mercedes-Benz C 300 (258 Hp) EQ Boost 9G-TRONIC?

4, Inline

What is the drivetrain of Mercedes-Benz C-class (W206, facelift 2026) Sedan 2026 C 300 (258 Hp) EQ Boost 9G-TRONIC?

Rear wheel drive. MHEV (Mild Hybrid Electric Vehicle, power-assist hybrid, battery-assisted hybrid vehicles, BAHV). The Internal combustion engine (ICE) and electric motor drive the rear wheels of the car with the ability to work only in mixed mode.

What is the length of 2026 Mercedes-Benz C-class Sedan?

4766 mm
187.64 in.

What is the width of 2026 Mercedes-Benz C-class Sedan?

1820 mm
71.65 in.

What is the kerb weight of 2026 Mercedes-Benz C-class (W206, facelift 2026) C 300 (258 Hp) EQ Boost 9G-TRONIC?

1685 kg
3715 lbs.

What is the maximum permissible mass of 2026 Mercedes-Benz C-class (W206, facelift 2026) C 300 (258 Hp) EQ Boost 9G-TRONIC?

2280 kg
5027 lbs.

What is the trunk (boot) capacity of 2026 Mercedes-Benz C-class Sedan?

455 l
16.1 cu. ft.

What are the number of gears and the gearbox type of 2026 Mercedes-Benz C-class (W206, facelift 2026) C 300 (258 Hp) EQ Boost 9G-TRONIC?

9, automatic transmission G-TRONIC

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General information

Brand

Mercedes-Benz

Model

C-class

Generation

C-class (W206, facelift 2026)

Modification (Engine)

C 300 (258 Hp) EQ Boost 9G-TRONIC

Start of production

August, 2026

Powertrain Architecture

MHEV (Mild Hybrid Electric Vehicle, power-assist hybrid, battery-assisted hybrid vehicles, BAHV)

Body type

Sedan

Seats

Doors

Looking for Mercedes-Benz C-class on the used-car market?

Check its history →

Performance specs

Fuel consumption at Low speed (WLTP)

10.1 l/100 km 23.3 US mpg
28 UK mpg
9.9 km/l

Fuel consumption at Medium speed (WLTP)

6.4 l/100 km 36.8 US mpg
44.1 UK mpg
15.6 km/l

Fuel consumption at high speed (WLTP)

5.2 l/100 km 45.2 US mpg
54.3 UK mpg
19.2 km/l

Fuel consumption at very high speed (WLTP)

5.8 l/100 km 40.6 US mpg
48.7 UK mpg
17.2 km/l

Combined fuel consumption (WLTP)

6.3-7 l/100 km 37.3 - 33.6 US mpg
44.8 - 40.4 UK mpg
15.9 - 14.3 km/l

CO₂ emissions (WLTP)

144-159 g/km

Fuel Type

Petrol (Gasoline)

Acceleration 0 - 100 km/h

6.1 sec

Acceleration 0 - 62 mph

6.1 sec

Acceleration 0 - 60 mph (Calculated by Auto-Data.net)

5.8 sec

Maximum speed

250 km/h, Electronically limited 155 mph

Emission standard

Euro 7

Weight-to-power ratio

6.5 kg/Hp, 153.1 Hp/tonne

Weight-to-torque ratio

4.2 kg/Nm, 237.4 Nm/tonne

Electric and hybrid car specs

Battery voltage

48 V

Battery technology

Lithium-ion (Li-Ion)

Electric motor 1

Electric motor power

23 Hp

Electric motor Torque

205 Nm 151 lb.-ft.

Electric motor location

Between the combustion engine and the transmission

Electric motor type

Synchronous

Internal combustion engine specs

Power

258 Hp @ 5800 rpm.

Power per litre

129.1 Hp/l

Torque

400 Nm @ 2000-3200 rpm. 295 lb.-ft. @ 2000-3200 rpm.

Engine layout

Front, Longitudinal

Engine Model/Code

M 254 Evo

Engine displacement

1999 cm³ 121.99 cu. in.

Number of cylinders

Engine configuration

Inline

Cylinder Bore

83 mm 3.27 in.

Piston Stroke

92.4 mm 3.64 in.

Compression ratio

12:1

Number of valves per cylinder

Fuel injection system

Direct injection

Engine aspiration

Turbocharger and electrically driven compressor, Intercooler

Valvetrain

DOHC, CAMTRONIC

Engine systems

Start & Stop System
Particulate filter

Volume and weights

Kerb Weight

1685 kg 3715 lbs.

Max. weight

2280 kg 5027 lbs.

Max load

595 kg 1312 lbs.

Trunk (boot) space - minimum

455 l 16.1 cu. ft.

Fuel tank capacity

66 l 17.44 US gal | 14.52 UK gal

Max. roof load

100 kg 220 lbs.

Permitted trailer load with brakes (12%)

1800 kg 3968 lbs.

Permitted trailer load without brakes

750 kg 1653 lbs.

Dimensions

Length

4766 mm 187.64 in.

Width

1820 mm 71.65 in.

Width with mirrors folded

1905 mm 75 in.

Width including mirrors

2047 mm 80.59 in.

Height

1438 mm 56.61 in.

Wheelbase

2865 mm 112.8 in.

Front track

1582 mm 62.28 in.

Rear (Back) track

1594 mm 62.76 in.

Drag coefficient (C_d)

0.24

Minimum turning circle (turning diameter)

10.64 m 34.91 ft.

Drivetrain, brakes and suspension specs

Drivetrain Architecture

The Internal combustion engine (ICE) and electric motor drive the rear wheels of the car with the ability to work only in mixed mode.

Drive wheel

Rear wheel drive

Number of gears and type of gearbox

9 gears, automatic transmission G-TRONIC

Front suspension

Coil spring, Independent multi-link suspension, Anti-roll bar

Rear suspension

Independent multi-link spring suspension with anti-roll bar

Front brakes

Ventilated discs

Rear brakes

Ventilated discs

Assisting systems

ABS (Anti-lock braking system)
4-wheel steering (4WS, active rear steering)

Steering type

Steering rack and pinion

Power steering

Electric Steering

Tire size

Front wheel tires: 225/50 R17; 225/45 R18; 225/40 R19
Rear wheel tires: 225/50 R17; 245/40 R18; 255/35 R19

Wheel rim size

Front wheel rims: 7J x 17; 7.5J x 18; 7.5J x 19
Rear wheel rims: 7J x 17; 8.5J x 18; 9J x 19

Specs of Mercedes-Benz C-class (W206, facelift 2026) C 300 (258 Hp) EQ Boost 9G-TRONIC /2026/