Excessive oil consumption (piston rings)
Attaches to CDAA at engine level · Engine · carried by 10 variants across 10 chassis
Overview
Excessive oil consumption (piston rings) is a common fault recorded against CDAA at engine level, typically from 60–150k km. It shows up as regular oil top-ups between services, low-oil warnings, oil-fouled plugs and occasional light blue smoke. Where it's documented, the repair runs €150–€4,000 (€150 for a breather; a short-block rebuild if the rings have gone, costs dated 2026-07), and it can be partly checked before you buy. 10 variants across 10 chassis in this database inherit it.
What happens
Symptom. Regular oil top-ups between services, low-oil warnings, oil-fouled plugs and occasional light blue smoke.
Cause. Low-tension oil-control rings with small drain-back holes coke up and let oil past the pistons, where it burns. A tired crankcase breather can add to it.
Later parts. Revised pistons and rings on later EA888 production
How to check it
Paperwork
Ask the owner's top-up interval, inspect the oil level and the spark-plug colour, and watch for smoke on hard acceleration and over-run.
On these cars the folder is most of the value.
Every variant that carries this
| Variant | Chassis | Body | Years | Risk | Good buy | Cost as % of good buy |
|---|---|---|---|---|---|---|
| 1.8 TFSI CDAA | 8P | hatchback | 2007–2013 | R3 | €3,900 | 53% |
| 1.8 TFSI CDAA | 8PA | hatchback | 2007–2013 | R3 | €4,000 | 52% |
| 1.8 TFSI CDAA | 8P7 | convertible | 2008–2013 | R3 | €4,500 | 46% |
| 1.8 TFSI CDAA | 1Z | hatchback | 2007–2013 | R3 | €2,450 | 85% |
| 1.8 TFSI CDAA | 1Z Combi | wagon | 2007–2013 | R3 | €2,600 | 80% |
| 1.8 TFSI CDAA | B6 | sedan | 2007–2010 | R3 | €2,400 | 86% |
| 1.8 TFSI CDAA | B6 Variant | wagon | 2007–2010 | R3 | €2,550 | 81% |
| 1.8 TFSI CDAA | 3T | hatchback | 2008–2015 | R3 | €3,350 | 62% |
| 1.8 TFSI CDAA | 3T Combi | wagon | 2009–2015 | R3 | €3,550 | 58% |
| 1.8 TFSI CDAA | 1P | hatchback | 2007–2012 | R3 | €2,150 | 97% |
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.