From VOSA website:
- Where a vehicle fails its MOT Test and stays at the Test Station in order to undergo repairs, only a partial re-examination will be required, provided the re-examination is carried out before the end of the tenth working day after the day of the initial test. This re-examination will be free.
- If the vehicle is brought back to the same Testing Station by the end of the next working day for one or more of the following items only, a partial re-examination is again required and this re-examination is also free:
Bonnet, boot lid, brake pedal anti-slip, direction indicators, doors, dropsides, fuel filler cap, hazard warning, horn, lamps, loading door, mirrors, rear reflectors, registration plates, seatbelts (but not anchorages), seats, sharp edges or projections, steering wheel, tailboard, tailgate, vehicle identification number (VIN), windscreen and glass, windscreen wipers/washers, wheels* and tyres*.
(* Not applicable to motor bicycles and side cars.)
- If the vehicle does not qualify for a re-test as listed in 1) or 2) above, and is brought back to the same Testing Station by the end of the tenth working day following the day of the initial test for retest, only a partial re-examination is required for which a maximum of half the full fee may be charged.