The Mercedes W123 2.8 MT is a first-generation coupe with a manual gearbox, and the way pedal movement translates into road speed through chosen gear ratios is worth understanding.
1 generation · Coupe
Generation photo. Individual trim appearance may differ.
The highest speed a vehicle can sustain under manufacturer test conditions. Some cars are electronically limited below their mechanical potential. Glossary entry
190 km/h
Engine type
Gasoline
Transmission
Manual
Type of boost?
A turbocharger or supercharger compresses the air entering the engine so a smaller engine can produce more power. Naturally aspirated engines draw air without a compressor. Glossary entry
No
Type of drive?
Which wheels receive power: front-wheel drive, rear-wheel drive or all-wheel drive. All-wheel drive can send power to every wheel for extra traction. Glossary entry
RWD
Bore and stroke?
The diameter of a cylinder (bore) and the distance the piston travels inside it (stroke). Together they determine the displacement of the engine. Glossary entry
86 × 78.8 mm
Engine capacity?
The total volume swept by all pistons inside the cylinders, usually stated in cubic centimetres or litres. Larger displacement often means more power but higher consumption. Glossary entry
2746 cm³
Engine location
Front, longitudinal
Number of gears?
How many fixed forward ratios a gearbox offers. More gears can improve economy and refinement; continuously variable transmissions have no fixed steps. Glossary entry
4
Maximum power?
A unit of engine or motor output. One metric horsepower is about 0.735 kilowatts. Peak power is normally reached at high engine speed. Glossary entry
156 hp
Maximum power, kw?
A unit of engine or motor output. One metric horsepower is about 0.735 kilowatts. Peak power is normally reached at high engine speed. Glossary entry
115 kW
Compression ratio?
The ratio between the largest and smallest volume of a cylinder as the piston moves. Higher ratios improve efficiency but may require higher-octane fuel. Glossary entry
8.7
Maximum power rpm
5500 rpm
Maximum torque N⋅m
223 N⋅m
Maximum torque rpm
4000 rpm
Acceleration to 100?
The time a vehicle needs to reach 100 km/h from a standstill, a common shorthand for overall performance. Glossary entry
10.6 s
Engine power system
Carburetor
Number of cylinders
6
Valves per cylinder?
The number of intake and exhaust valves in each cylinder. Four valves per cylinder is common and helps the engine breathe at higher speeds. Glossary entry
2
Cylinder arrangement
Inline
Maximum power ICE
Not provided
Maximum power ICE
Not provided
Energy & emissions
ECO class
Not provided
Battery power
Not provided
Fuel grade
92
Mild Hybrid?
A car with a small electric motor and battery that assist the combustion engine and recover braking energy but cannot drive on electricity alone. Glossary entry
Not provided
Battery type
Not provided
CO2 emissions?
The amount of carbon dioxide released per kilometre under a standardised test. Lower figures usually go hand in hand with lower fuel consumption. Glossary entry
Not provided
Full charge home
Not provided
Power consumption
Not provided
Fuel tank capacity
65 l
Full public charging time
Not provided
Driving range, maximum?
The distance an electric or plug-in vehicle can travel on a full charge under a stated test cycle. Temperature, speed and load change the real result. Glossary entry
Not provided
Driving range, minimum?
The distance an electric or plug-in vehicle can travel on a full charge under a stated test cycle. Temperature, speed and load change the real result. Glossary entry
Not provided
Fuel consumption city
17.3 l
Average consumption
12.8 l
Fuel consumption highway
9.6 l
Dimensions & body
Doors number
2
Number of seats
4
Width
1786 mm
Height
1395 mm
Length
4640 mm
Body type
Coupe
Wheelbase?
The distance between the centres of the front and rear wheels. A longer wheelbase usually gives more cabin space and a calmer ride; a shorter one helps agility and parking. Glossary entry
2710 mm
U-turn diameter
Not provided
Depth of the ford to be crossed
Not provided
Body style
Coupe
Rear track width?
The distance between the centres of the two wheels on the same axle. A wider track generally improves stability in corners. Glossary entry
1446 mm
Trunk volume max
Not provided
Trunk volume min
500 l
Front track width?
The distance between the centres of the two wheels on the same axle. A wider track generally improves stability in corners. Glossary entry
1488 mm
Max weight
1900 kg
Curb weight?
The weight of the vehicle with all standard equipment and fluids but without passengers or cargo. Glossary entry
1445 kg
Ground clearance, maximum?
The gap between the lowest point of the underbody and the road. More clearance helps on rough roads and steep driveway ramps. Glossary entry
Not provided
Ground clearance, minimum?
The gap between the lowest point of the underbody and the road. More clearance helps on rough roads and steep driveway ramps. Glossary entry
165 mm
Identity & configuration
Body code
C123
Vehicle class
E
Body designation
C123
Right-hand drive
No
Additional specifications
Stop
1985-12-31
Start
1975-01-01
Wheel size
Not provided
Rear brakes
Disc
Front brakes
Disc
Rear suspension
Independent, spring
Front suspension
Independent, spring
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Not provided means the source has no value. Zero remains zero. Units are shown as supplied; range test cycles are only stated when known.
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Engine and Transmission
The throttle sets how much air and fuel the engine draws, so it governs torque rather than speed directly. Road speed follows only after the selected gear ratio multiplies that torque, which is why the same pedal position feels different in each gear.
Drivetrain and Everyday Driving
Rear-wheel drive fixes where torque leaves the car: through the gearbox to the rear axle. Wet or loose surfaces change only the grip available at those tyres, so the layout stays identical while the usable amount of that torque falls.
Body and Practicality
The opening decides whether an object passes at all, since its width and height form a fixed frame. Depth is separate: on a coupe the boot extends beyond easy arm's reach, so items slid to the far end need retrieving deliberately.
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