Mercedes-Benz B-Class Quiz
Diesel engines

Specifications

In this manual: Diesel engines
Operator's Manual - Mercedes-Benz B-Class — 194Airbags and belt tensioners — 9Diesel engines — 22Electrical equipment — 6Automatic transmission — 5Manual gearbox — 5Brakes — 12Heating - air conditioning — 13Suspension - axles - geometry — 7Vehicle specifications and identification — 7Driveshafts — 4Steering — 6Clutch — 4Body — 18
~1min read

Turbo-diesel, 4-stroke, 4-cylinder in-line, 16-valve engine mounted transversely at the front of the vehicle.

Cast iron cylinder block and aluminium alloy cylinder head.

'Common Rail' direct injection system with electronically controlled injection pump, and turbocharging with a fixed-geometry turbocharger on the B180 CDI and a variable-geometry turbocharger on the B200 CDI. Air-to-air intercooler on both engines.

Double overhead camshaft timing. The timing chain drives the intake camshaft from the crankshaft, and the intake camshaft drives the exhaust camshaft through gears.

Engines

Model designation C180 CDI C200 CDI
Type / Code 640.940 640.941
Bore x stroke (mm) 83 x 92
Displacement (cm3) 1 991
Compression ratio 18:1
Compression pressure (bar) 27 à 32
Maximum compression pressure difference between cylinders (bar) 3
Maximum power:
' EEC (kW) 80 103
' DIN (hp) 109 140
Engine speed at maximum power (rpm) 4200 4200
Maximum torque (daN.m) 25 30
Engine speed at maximum torque (rpm): 1 600-2 600 1 600-3 000

Test yourself

A quick Mercedes-Benz B-Class quiz: every answer comes with an explanation and a link to the manual page.