The light, magnesium cased MQ200 and the MQ250, sized for higher torque, are the most widespread manual gearboxes in the transverse engine VAG models. Both have the same two weak points, and both depend on use.

The injector does not close fully, and with the engine standing fuel drips into the cylinder. The symptoms are hard, long cranking (mostly after standing for a while), smoky first minutes, a hesitant idle, and dilution of the engine oil: the oil level goes higher, it smells of petrol, and the diluted oil lubricates worse. It shows up on cars built between 2018 and 2020.

While you steer, a grinding, squealing noise comes from the steering column, which many people blame on the power steering pump or the steering rack, although the cause is often the control unit in the steering column, and that is a smaller part, not the rack. Replacing the control unit is the smaller repair, replacing the rack costs much more, and the noise alone does not separate the two, so a fault code read is needed.

In the EA211 the water pump and the thermostat are one plastic module, and the pump is driven not by the timing belt but by a separate toothed belt behind the exhaust camshaft. There are usually two problems with it: the plastic housing warps or cracks (slow coolant loss, a sweet smell, rising temperature), or the drive belt ages (a chirping noise, then an engine left with no cooling). The housing is particularly sensitive if oil reaches it: for example from a leaking crankcase ventilation. The module has to be replaced whole: dismantling it warps it in itself.

Water gets in through the sunroof drains, the door seals or the window guides, and collects on the floor and in the sill. The water also ruins the wiring and the control units in the floor, which leads to hesitant starting and an alarm going off on its own. With a fault like this, lift the carpet first, because the water is under it.

Over bumps a booming, squeaking noise comes from the front, and a common cause is a bump stop put back wrongly after a damper replacement: that is not a factory fault, but the result of earlier work. On cars built between 2013 and 2016 the rubber bushes wear out too, the dampers weaken as well, the car rides more harshly, and the tyres wear unevenly. The two faults sound the same on a test drive, so if the suspension was repaired at a garage, ask for the invoice and listen to the car.

The engine warning light comes on, the engine runs badly, and the fault code points at oil pressure, although the most common cause is the sensor itself, not that the engine really has no oil pressure. Replacing the sensor is the smaller and more common repair, but you cannot decide that just by looking, because only a measurement can rule out low oil pressure, and if the pressure really is low the engine is damaged. Do not buy the car without a fault code read.

With the air conditioning on, a whistling noise comes from the dashboard, and the cause is the expansion valve, which meters the refrigerant, so the compressor has not failed and the gas has not run out. Most places first suggest a recharge, but a recharge does not stop the noise: the noise comes back, and you pay for a recharge that does not help.

The per cylinder ignition coil of these direct injection, turbocharged petrol engines fails. According to the Haynes service material this and similar simple electrical faults account for roughly eighty per cent of workshop visits.