Electromechanical steering rack failure
Attaches to B8 at chassis level · Suspension · carried by 5 variants across 1 chassis
Overview
Electromechanical steering rack failure is a occasional fault recorded against B8 at chassis level, typically from 120–250k km. It shows up as steering assistance warning, heavy or inconsistent assistance, knocking from the rack. Where it's documented, the repair runs €900–€2,000 (rack replacement and alignment at an independent, costs dated 2026-07), and it can be checked before you buy. 5 variants across 1 chassis in this database inherit it.
What happens
Symptom. Steering assistance warning, heavy or inconsistent assistance, knocking from the rack.
Cause. The electromechanical rack's motor and control unit fail. Replacement is expensive and usually done as a complete rack.
Sources. owner reports
How to check it
Static checks
Turn lock to lock at a standstill and listen. Check for steering warnings at start-up and scan for rack fault codes.
Engine off, ideally on a lift.
Every variant that carries this
| Variant | Chassis | Body | Years | Risk | Good buy | Cost as % of good buy |
|---|---|---|---|---|---|---|
| 2.0 TFSI CDNC | B8 | sedan | 2008–2012 | R5 | €4,300 | 34% |
| 2.0 TFSI CNCD | B8 | sedan | 2012–2015 | R3 | €8,200 | 18% |
| 2.0 TDI CJCA | B8 | sedan | 2008–2015 | R3 | €5,200 | 28% |
| 3.0 TDI CCWA | B8 | sedan | 2008–2015 | R4 | €7,500 | 19% |
| 1.8 TFSI CABB | B8 | sedan | 2008–2015 | R4 | €3,900 | 37% |
The last column is the point. The same repair is an inconvenience on one variant and a reason to scrap the car on another. A failure costing a quarter of the vehicle's value changes the purchase decision regardless of how rare it is.