VW Eos

With direct injection, intake valves are no longer cleaned by fuel. Crankcase gas and oil mist bake on as a carbon coating — from approx. 80,000–120,000 km power loss and rough running result. Walnut blasting necessary.

Symptoms: Rough cold running, slight power reduction, rough idle, slightly increased fuel consumption

On early model years ignition coil failures occur, particularly on cylinders 5 and 6. Misfires and sporadic cylinder deactivation result. Replacing all 6 coils on one failure recommended as subsequent failures are typical.

Symptoms: Sporadic hesitation, MIL with misfire code P030x, strongly noticeable in cold running

The 3.6 FSI VR6 shows chain spread (measuring block 208/209). Less pronounced than the older 2.8 VR6, but should be checked with a diagnostic tool. Cheap oil accelerates chain wear.

Symptoms: Slight rattling on cold start possible, detectable by diagnostic tool through spread in MB 208/209

The 3.6 V6 FSI CDVA uses direct injection, so fuel does not clean the intake valves. EGR exhaust gases and crankcase ventilation deposit carbon on the valves.

Symptoms: Rough idle, misfires, power loss, increased fuel consumption

Drain channels in the A-pillars and rain drainage of the five-piece folding roof become blocked. Water enters the interior, boot, and hydraulic block. Regular cleaning of the 4 drain holes is essential.

The steel folding roof hydraulic pump fails at high mileage or after water ingress. The roof can no longer open or close. Dealer replacement costs over 1,600 €; used pumps available from 90 €.

Thermomechanical overload in the ABS/ESP control unit can break the earth connection and disable ABS/ESP. Affects Eos vehicles produced 05/2008–08/2010. Software update as the remedy.

Foam pads behind the wheel arch liners absorb water and press it continuously against the inner wing edge. Rust forms from the inside — a known design flaw since the Golf V platform.

The optional DSG gearbox is prone to clutch wear and juddering on take-off with frequent city driving. Regular oil changes every 40,000–60,000 km are absolutely essential.

The drain hose in the roof pillar becomes detached from the coupling piece and directs rainwater into the A-pillar instead of outside. Mainly affects vehicles before the 2010 facelift. Damp interior trim and wet driver-side floor mats are typical symptoms.

The A/C pressure switch fails and shuts off the compressor, so the system no longer provides cooling. Early build years up to mid-2007 with the Zexel compressor are particularly susceptible.

The plastic gears in the sunroof motor wear out and start slipping. The glass sunroof no longer opens or closes fully, or becomes stuck in the middle position.