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Mercedes CLS CLS400d 2.9 AT 4Matic CLS 450 4Matic Elegance Equipment — Third Generation

This Mercedes CLS CLS400d 2.9 AT 4Matic in CLS 450 4Matic Elegance form is examined through its cabin fittings, where each listed convenience item depends on a specific control or socket the occupant actually touches.

3 generation · Fastback

2017–2022

CLS400d 2.9 AT 4Matic

Diesel · Automatic · AWD

At a glance

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CLS 450 4Matic Elegance

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Specifications

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Performance & powertrain

Top speed
?

The highest speed a vehicle can sustain under manufacturer test conditions. Some cars are electronically limited below their mechanical potential. Glossary entry

250 km/h
Engine type
Diesel
Transmission
Automatic
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

Turbo
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

AWD
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

82 × 92.4 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

2925 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

9
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

340 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

250 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

15.5
Maximum power rpm
4400 rpm
Maximum torque N⋅m
700 N⋅m
Maximum torque rpm
1200 – 3200 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

5 s
Engine power system
Not provided
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

4
Cylinder arrangement
Inline
Maximum power ICE
Not provided
Maximum power ICE
Not provided

Energy & emissions

ECO class
Euro 6
Battery power
Not provided
Fuel grade
Diesel
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

156 g/km
Full charge home
Not provided
Power consumption
Not provided
Fuel tank capacity
50 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
6.9 l
Average consumption
5.9 l
Fuel consumption highway
5.4 l

Dimensions & body

Doors number
4
Number of seats
4–5
Width
1890 mm
Height
1435 mm
Length
4988 mm
Body type
Fastback
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

2939 mm
U-turn diameter
11.6 m
Depth of the ford to be crossed
Not provided
Body style
Sedan
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

1622 mm
Trunk volume max
Not provided
Trunk volume min
520 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

1618 mm
Max weight
2545 kg
Curb weight
?

The weight of the vehicle with all standard equipment and fluids but without passengers or cargo. Glossary entry

1935 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

93 mm

Identity & configuration

Body code
C257
Vehicle class
E
Body designation
C257
Right-hand drive
No
Engine code
OM 656.929

Additional specifications

Stop
2022-01-31
Start
2017-11-01
Wheel size
Not provided
Rear brakes
Ventilated disc
Front brakes
Ventilated disc
Rear suspension
Independent, spring
Front suspension
Independent, spring

Trim equipment

Dimensions & body

Number of seats
4

Additional specifications

Driver Assistance Systems
Anti-lock braking system (ABS), Electronic stability program (ESP), Hill start assist (HAS), Collision avoidance system, Blind spot monitoring system
Stop
2022-01-31
View
Automatic headlight range control, Light sensor, Rain sensor
Start
2017-11-01
Airbags
Driver's airbag, Passenger airbag, Side front airbags, Window airbags (curtains), Driver's knee airbag
Camera
Rear-view camera
Isofix
Isofix for the back row
Comfort
Cigarette lighter and ashtray, Cooled glove box, On-board computer, Start-stop system, Power folding mirrors, Power mirrors, Multifunction steering wheel, Paddle Shifters
Exterior
Metallic
Interior
Steering-wheel heater, Folding rear seat, Third rear headrest, Leather steering wheel, Front center armrest, Power window
Safety
Tire pressure sensors
Headlights
LED headlights
Sound
Audio system Hi-Fi
Diameter
R18 ″
Multimedia
AUX, USB, Bluetooth, 12V, Navigation system
Cruise control
Cruise control
Parking assist system
Front parking sensors, Rear parking sensors, Automatic parking system
Power steering
Active power steering
Air conditioner
Single-zone climate control
Seat position memory
Front seats with memory function
Electric heating
Side mirrors
Ventilation
Ventilated front seats
Steering wheel adjustment
Steering wheel height adjustment, Steering wheel reach adjustment
Anti theft system
Alarm, Keyless central locking, Immobilizer, Motion sensor
Seat trim
Genuine leather seats
Power seat adjustment
Front seat adjustment

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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Units

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Comfort and Convenience

The listed cigarette lighter works as a heated element in a socket, so its console position doubles as the access point that the adjacent ashtray serves; the cooled glove box instead draws from the single-zone climate control.

Safety and Driver Assistance

The listed collision avoidance system is an assisting function rather than a protective structure: it monitors closing distance ahead and warns the driver, supporting braking effort instead of replacing the driver's own input.

Multimedia and Connectivity

Listed Bluetooth pairs a phone wirelessly, so track selection and calls stay on the handset or steering controls, while USB and AUX inputs require a cable and keep the device physically tethered.