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Mercedes-Benz · Electric Drive

Single-speed reduction gearbox

The fixed-ratio gearset between the motor and the driveshafts. An EV has no multi-speed gearbox.

How you know it is this

  • A whine that changes with road speed
  • A clunk on changing between drive and reverse
  • Oil leaking from the drive unit
  • A grinding under load

Worth knowing before you buy

  • Far simpler than an automatic gearbox and much more reliable — there are no clutches, no valve body and no torque converter.
  • It has oil, and that oil does have a service life even though many owners assume an EV has nothing to service.
  • Usually integral with the motor housing, so a gearbox fault often means the drive unit.
  • A whine that has always been there is normal on an EV. A whine that has appeared is not.

What we need to quote it. The chassis number and the fault codes. The chassis number settles the generation, the body and usually the engine in seventeen characters — it is on your mulkiya. A photograph of the old part helps where there is more than one version.

InverterDrive motorResolverReduction gearboxDrive unit mounts
Electric drive unit — schematic, to show where the part sits. Arrangement is right; it is a diagram and not a fitment reference.

Rest of the drive unit

All electric drive parts
Get in touch

Single-speed reduction gearbox for your Mercedes-Benz?

Send the chassis number and a photograph of the old part. We come back with genuine, OEM and aftermarket options priced side by side, with lead times.

Mon–Sat, 8:00 AM – 6:00 PM · +971 54 303 3119 (Operations Director) · +971 54 241 0599 (Managing Director)