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Mercedes-Benz W123 W123 (1975–1986) Specs

Specifications, engines, dimensions and technical data.

Gen 1 1975 - 1986 W123 Coupe
Mercedes-Benz W123
Engine —
Power —
Fuel —
Gears —
Platform —

Body Style



Mercedes-Benz W123 W123 overview

The Mercedes-Benz W123 (W123) is the 1st generation of the W123, built from 1975 to 1986. It is offered as a Coupe with 18 engines (diesel, petrol), from 55 HP to 177 HP. The 300 CD (78 Hp) Automatic accelerates from 0 to 100 km/h in 20.8 s, reaches a top speed of 143 km/h and is 4763 mm long.

How much horsepower does the Mercedes-Benz W123 have?

The Mercedes-Benz W123 (W123) has 55 HP to 177 HP, depending on the engine: 2.0 Om615 (55 HP), 2.2 Om615 (60 HP), 2.4 Om616 (65 HP), 2.4 Om616 (72 HP), 3.0 Om617 (78 HP), 3.0 Om617 (80 HP), 3.0 Om617 (84 HP), 3.0 Om617 (88 HP), 2.0 M115 (94 HP), 2.0 M102 (101 HP), 2.3 M115 (109 HP), 2.0 M102 (109 HP), 3.0 Om617 (121 HP), 3.0 Om617 (125 HP), 2.5 M123 (129 HP), 2.3 M102 (136 HP), 2.8 M110 (156 HP), 2.8 M110 (177 HP).

What engines are available for the Mercedes-Benz W123?

The Mercedes-Benz W123 is available with 18 engines: 2.0 Om615 (55 HP, diesel), 2.2 Om615 (60 HP, diesel), 2.4 Om616 (65 HP, diesel), 2.4 Om616 (72 HP, diesel), 3.0 Om617 (78 HP, diesel), 3.0 Om617 (80 HP, diesel), 3.0 Om617 (84 HP, diesel), 3.0 Om617 (88 HP, diesel), 2.0 M115 (94 HP, petrol), 2.0 M102 (101 HP, petrol), 2.3 M115 (109 HP, petrol), 2.0 M102 (109 HP, petrol), 3.0 Om617 (121 HP, diesel), 3.0 Om617 (125 HP, diesel), 2.5 M123 (129 HP, petrol), 2.3 M102 (136 HP, petrol), 2.8 M110 (156 HP, petrol), 2.8 M110 (177 HP, petrol).

What are the dimensions of the Mercedes-Benz W123?

The Mercedes-Benz W123 is 4763 mm long, 1786 mm wide, 1395 mm tall, with a 2710 mm wheelbase.

How fast is the Mercedes-Benz W123?

The Mercedes-Benz W123 300 CD (78 Hp) Automatic goes from 0 to 100 km/h in 20.8 s and has a top speed of 143 km/h.

Advanced Specs

Overview

Generation Mercedes-Benz C123
Year 1977–1979
Platform Mercedes-Benz W123
Variant 300 CD (78 Hp) Automatic
Body type coupe
Engine type Fuel
Fuel type Diesel
Seats 4
Doors 2

Power & torque

Power 78 HP
Power @ max rpm 4400 rpm
Torque 156 Nm
Torque @ max rpm 2400 rpm

Performance

Top speed 143 km/h
0–100 km/h 20.8 s
0–62 mph 20.8 s

Engine

Engine code OM617.912
Displacement 3005 cc
Cylinders 5
Configuration inline
Bore 91.0 mm
Stroke 92.4 mm
Compression ratio 21.5
Valves per cylinder 2
Injection system Precombustion Chamber Injection
Aspiration Naturally Aspirated Engine
Valvetrain sohc
Oil capacity 7.5 L
Coolant 11.0 L
Engine layout Front Longitudinal

Drivetrain & transmission

Drive Rear Wheel Drive
Powertrain architecture Internal Combustion Engine
Drivetrain architecture The Internal Combustion Engine Ice Drives The Rear Wheels Of The Vehicle
Gearbox type torque_converter
Gears 4
Gearbox code 722.1
Gearbox manufacturer Mercedes Benz

Dimensions

Length 4763 mm
Width 1786 mm
Height 1395 mm
Wheelbase 2710 mm
Front track 1488 mm
Rear track 1446 mm

Mass

Kerb weight 1550 kg
Max weight 2015 kg
Max load 465 kg

Consumption & emissions

Fuel combined 11.5 L/100km
Fuel tank 80.0 L

Chassis & brakes

Front suspension Double Wishbone
Rear suspension Trailing Arm
Front brakes disc
Rear brakes disc
Steering type Cone Worm With Recirculation Balls
Power steering Hydraulic Steering
Tire size Front wheel tires: 195/70 R14Rear wheel tires: 195/70 R14
Wheel rims Front wheel rims: 6J x 14Rear wheel rims: 6J x 14

Efficiency ratios

Weight-to-power 19.9 kg/Hp, 50.3 Hp/tonne
Weight-to-torque 9.9 kg/Nm, 100.6 Nm/tonne

Other

Start Of Production 1977
End Of Production 1979

Performance

Engine speed (1k/rpm)

Figures from catalog data; real-world values may differ.

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