Water pump and thermostat failures.
Inspect · Check for coolant leaks and overheating history.

What the known faults on this Volkswagen Jetta typically cost to put right at a UK independent garage · use the figures to price risk before you bid, and to justify a reduction when something shows up on inspection.
The single priciest documented job on the 2011–2018 Volkswagen Jetta is head gasket / cooling system repair at £900–£2,600. Few cars need every repair listed here · treat £2,680–£7,800 as the full exposure if one arrived with all of them.
Water pump and thermostat failures.
Inspect · Check for coolant leaks and overheating history.
Timing chain tensioner on 1.8T/2.0T (EA888).
Inspect · Listen for a rattle on cold start; confirm updated tensioner.
Carbon buildup on intake valves (direct-injection turbo engines).
Inspect · Watch for rough idle/misfires; ask about walnut blasting.
Window regulator failures.
Inspect · Test all windows up and down.
Ranges are indicative parts-and-labour costs at a UK independent garage, inclusive of VAT. Franchised dealers typically sit 40–80% higher, and prestige or electrified variants sit at the top of each band. Always get a written quote before committing.
Build a tickable checklist for the exact car in front of you, record faults with photos, and hand the buyer a report.