Mercedes A Class Oxygen Sensor
Replacement oxygen sensor — fitment, symptoms & live UK prices.
Fits Mercedes A Class — check your reg/VIN to confirm
From £14.95 · 6 live listings on eBay
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Lambda Probe Mercedes ML GL Class W164 W169 Oxygen Sensor A0035427018
£14.95View ›
MERCEDES A CLASS A45 W176 LAMBDA OXYGEN SENSOR 2.0 PETROL A0075426318 2018
£14.99View ›
MERCEDES A CLASS A45 W176 LAMBDA OXYGEN SENSOR 2.0 PETROL 0095425618 2018
£14.99View ›
Lambda O2 Oxygen Sensor for Mercedes-Benz A C E S-Class 0015404717 0025402317
£18.99View ›
Lambda Oxygen Sensor Rear Fits Mercedes A Class C CLK SLK
£21.95View ›
Lambda Oxygen Sensor Front Fits Mercedes A Class (W169) 1.5
£21.95View ›
Will it fit my Mercedes A Class?
Pre-cat (upstream) and post-cat (downstream) sensors are different parts — check which one your fault code points to, and how many your engine has.
Tip: filter by your reg on eBay's compatibility check, or match the part number stamped on your old unit.
Signs your Mercedes A Class oxygen sensor needs replacing
- Engine warning light (O2/lambda code)
- Poor fuel economy
- Rough idle or hesitation
- Failed emissions/MOT
Fitting it yourself
Usually a single plug and a thread into the exhaust — quick if it's not seized. Penetrating oil helps on an old sensor.
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