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Vehicle

Mercedes-Benz C-Class

The compact Mercedes and its global volume seller. The chassis codes (W203 through W206) are how the community organises knowledge, and generation matters enormously — engines, gearboxes and electrical architecture all change at the boundaries.

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Mercedes-AMG C 43 (W206), rear three-quarter view
Alexander-93 · CC BY-SA 4.0 (external)

Generations

  • W203 2000–2007

    M111/M271 fours with supercharging; rust and early-2000s electronics are the age story.

    Body styles
    Sedan · Estate · Coupé
    Platform
    Mercedes W203
    Engines
    • 1.8 Kompressor — M271 · petrol · 220–260 Nm (162–192 lb-ft)
    • 2.0 Kompressor — M111 · petrol
    • 2.6 V6 — M112 · petrol · 240 Nm (177 lb-ft)
    • 3.2 V6 — M112 · petrol · 160–260 kW (215–349 hp) · 310–450 Nm (229–332 lb-ft)
    • 5.4 V8 — M113 · petrol · 510 Nm (376 lb-ft) · C 55 AMG
    • 2.2 CDI — diesel · OM611 and OM646
    • 2.7 CDI five-cylinder — OM612 · diesel · 370–400 Nm (273–295 lb-ft)
    • 3.0 V6 CDI — OM642 · diesel · C 320 CDI
    • 2.5 — M272 · petrol · 150 kW (201 hp) · 245 Nm (181 lb-ft)
    • 2.1 turbo — OM611 · diesel
    • 2.1 turbo — OM646 · diesel · 65–125 kW (87–168 hp) · 220–400 Nm (162–295 lb-ft)
    • 3.0 turbo — OM642 · diesel · 510 Nm (376 lb-ft)
    Transmissions
    6-speed manual · 7G-Tronic automatic · 5-speed 5G-Tronic automatic · 7-speed 7G-Tronic automatic
    Drivetrain
    Rear-wheel drive · 4MATIC four-wheel drive

  • W204 2007–2014

    M271 EVO and OM651 diesel — the OM651's injector and timing-chain histories are well documented.

    Body styles
    Sedan · Estate · Coupé
    Platform
    Mercedes W204
    Engines
    • 1.6 turbo — M274 · petrol · 95–115 kW (127–154 hp) · 210–250 Nm (155–184 lb-ft) · M270
    • 1.8 Kompressor — M271 · petrol · 135 kW (181 hp) · 250 Nm (184 lb-ft)
    • 3.0 V6 — M272 · petrol · 170 kW (228 hp) · 300 Nm (221 lb-ft)
    • 3.5 V6 — M272 · petrol · 200–225 kW (268–302 hp) · 350–365 Nm (258–269 lb-ft) · M272 and M276
    • 6.2 V8 — M156 · petrol · 336–380 kW (451–510 hp) · 600–620 Nm (443–457 lb-ft) · C 63 AMG, M156
    • 2.1 CDI — OM651 · diesel · 88–150 kW (118–201 hp) · 300–500 Nm (221–369 lb-ft)
    • 2.1 CDI — OM646 · diesel · 100–125 kW (134–168 hp) · 270–400 Nm (199–295 lb-ft)
    • 3.0 V6 CDI — OM642 · diesel · 165–195 kW (221–262 hp) · 510–620 Nm (376–457 lb-ft)
    • 1.6 — M271 · petrol · 115 kW (154 hp) · 230 Nm (170 lb-ft)
    • 2.5 — M272 · petrol · 150 kW (201 hp) · 245 Nm (181 lb-ft)
    • 3.5 — M276 · petrol · 225 kW (302 hp) · 370 Nm (273 lb-ft)
    Transmissions
    6-speed manual · 7G-Tronic automatic · 5-speed 5G-Tronic automatic · 7-speed 7G-Tronic automatic
    Drivetrain
    Rear-wheel drive · 4MATIC four-wheel drive

  • W205 2014–2021

    M274 petrol and OM654 diesel late in the run; airmatic suspension on many.

    Body styles
    Sedan · Estate · Coupé · Convertible
    Platform
    MRA
    Engines
    • M274 2.0 — M274 · petrol · 135–180 kW (181–241 hp) · 300–370 Nm (221–273 lb-ft)
    • 1.5 — M264 · mild hybrid · 115 kW (154 hp) · 250–280 Nm (184–207 lb-ft)
    • 2.0 — M264 · mild hybrid · 190 kW (255 hp) · 370 Nm (273 lb-ft)
    • 2.1 — OM651 · diesel · 120–150 kW (161–201 hp) · 400–500 Nm (295–369 lb-ft)
    • OM654 2.0 — OM654 · diesel · 110–180 kW (148–241 hp) · 360–500 Nm (266–369 lb-ft)
    • 1.6 turbo — M270 · petrol · 75–115 kW (101–154 hp) · 180–250 Nm (133–184 lb-ft)
    • 3.0 turbo — M276 · petrol · 245–287 kW (329–385 hp) · 480–520 Nm (354–384 lb-ft)
    • 4.0 turbo — M177 · petrol · 350–375 kW (469–503 hp) · 650–700 Nm (479–516 lb-ft)
    • 2.0 turbo — M139 · mild hybrid · 285–310 kW (382–416 hp) · 480–500 Nm (354–369 lb-ft)
    • 1.6 turbo diesel — OM626 · diesel · 118 kW (158 hp) · 280–350 Nm (207–258 lb-ft)
    Transmissions
    6-speed manual · 7G-Tronic automatic · 9G-Tronic automatic · 7-speed 7G-Tronic Plus automatic · 9-speed 9G-Tronic Plus automatic
    Drivetrain
    Rear-wheel drive · Four-wheel drive

  • W206 2021–present

    All-four-cylinder with 48V assistance — mild-hybrid codes are now baseline.

    Body styles
    Sedan · Estate
    Platform
    Mercedes MRA2
    Engines
    • 1.5 turbo mild hybrid — M254 · mild hybrid · 116–150 kW (156–201 hp) · 250–300 Nm (184–221 lb-ft)
    • 2.0 turbo mild hybrid — M139 · mild hybrid · 285–310 kW (382–416 hp) · 480–500 Nm (354–369 lb-ft)
    • 2.0 turbo PHEV — M254 · plug-in hybrid · 230–290 kW (308–389 hp) · 550–650 Nm (406–479 lb-ft) · C 300 e
    • 2.0 diesel — OM654 · mild hybrid · 120–195 kW (161–261 hp) · 380–550 Nm (280–406 lb-ft)
    • 2.0 diesel PHEV — plug-in hybrid · C 300 de
    • 2.0 turbo — M139L · plug-in hybrid
    Transmissions
    9G-Tronic automatic · 9-speed 9G-Tronic automatic
    Drivetrain
    Rear-wheel drive · 4MATIC four-wheel drive

Service information

Information, not instruction

CarGeek is a reference, not a service manual. Its pages are written from public sources and from what other people have found, never from a manufacturer's own service information, so they can be wrong or incomplete for your particular vehicle. Some of what they describe carries real risk: high voltage, fuel under pressure, stored energy, hot and moving parts.

Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.

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