Your vehicle may be able to have a partial retest for free or reduced MOT fee in the following cases.
Leaving your vehicle at the test centre
If the vehicle is left at the test centre for repair and retested before the end of 10 working days following the day it originally failed, then only a partial retest is needed. There is no fee.
Bringing your vehicle back to the test centre
Before the end of the next working day
You won’t have to pay again if the vehicle is brought back to the same test centre before the end of the next working day for a partial retest on one or more of the following items only:
brake pedal antislip
break glass hammer (Class 5 vehicles only)
doors (including hinges, catches and pillars)
door open warning device (Class 5 vehicles only)
emergency exists and signs (Class 5 vehicles only)
entrance door remote control (Class 5 vehicles only)
entrance/exit steps (Class 5 vehicles only)
fuel filler cap
headlamp cleaning or levelling devices (that doesn’t need a headlamp aim check)
lamps (excluding headlamp aim)
main beam ‘tell-tale’
seatbelts (but not anchorages)
seatbelt load limiter
sharp edges or projections
stairs (Class 5 vehicles only)
trailer electrical sockets
towbars (excluding body around anchorage points)
tyre pressure monitoring system
vehicle identification number (VIN)
windscreen and glass
wheels and tyres (excluding motorbikes and motorbikes with sidecar)
Bringing your vehicle back within 10 working days
If the vehicle is removed from the test centre for repair and returned within 10 working days following the day it originally failed, then only a partial retest is needed. In this case a partial retest fee may be charged.
In all other cases, you’ll need to get a full retest and pay the full MOT test fee again.