Audi A6 C7 — Reliability
Reliability Summary
Engine Comparison
| Engine | Reliability Score | Verdict |
|---|---|---|
|
EA288 2.0 TDI (CRBC/CRLB/CUNA/DFGA/DFHA/DETA/CUAA/DTTA/DTUA/DTIA)
2.0L TDI (clean diesel) |
69/100 | ACCEPTABLE |
|
2.0 TDI CR EA189 (CBAB/CBDC/CFFB/CFHC/CAGA/CBBB/CFGB/CJCA/CLJA/CNHA)
2.0L TDI CR I4 (EA189) |
62/100 | CAUTION |
Engines in this model
EA288 2.0 TDI (CRBC/CRLB/CUNA/DFGA/DFHA/DETA/CUAA/DTTA/DTUA/DTIA)
2.0L TDI (clean diesel)
MQB/MDB-era 2.0 TDI (2012 on), including the 2019+ evo with twin AdBlue dosing. Robust bottom end; t...
View details →2.0 TDI CR EA189 (CBAB/CBDC/CFFB/CFHC/CAGA/CBBB/CFGB/CJCA/CLJA/CNHA)
2.0L TDI CR I4 (EA189)
The first common-rail 2.0 TDI (2007-2015) and the Dieselgate engine. Strong and economical, but the ...
View details →Known Issues Across All Engines
| Issue | Engine | Severity |
|---|---|---|
| Switchable water pump / control slide failure - overheating (built to Sep 2014) | EA288 2.0 TDI (CRBC/CRLB/CUNA/DFGA/DFHA/DETA/CUAA/DTTA/DTUA/DTIA) | high |
| Timing belt - interference engine, long official interval | EA288 2.0 TDI (CRBC/CRLB/CUNA/DFGA/DFHA/DETA/CUAA/DTTA/DTUA/DTIA) | high |
| DPF clogging and fuel dilution of the oil on short trips | EA288 2.0 TDI (CRBC/CRLB/CUNA/DFGA/DFHA/DETA/CUAA/DTTA/DTUA/DTIA) | moderate |
| AdBlue / SCR faults - dosing valve crystals, pump module, NOx sensors | EA288 2.0 TDI (CRBC/CRLB/CUNA/DFGA/DFHA/DETA/CUAA/DTTA/DTUA/DTIA) | moderate |
| Excessive oil consumption (184 PS versions) | EA288 2.0 TDI (CRBC/CRLB/CUNA/DFGA/DFHA/DETA/CUAA/DTTA/DTUA/DTIA) | moderate |
| Intake-manifold intercooler internal cracks - coolant burned in the cylinders | EA288 2.0 TDI (CRBC/CRLB/CUNA/DFGA/DFHA/DETA/CUAA/DTTA/DTUA/DTIA) | moderate |
| EGR cooler and valve - sooting, cracks and coolant loss | EA288 2.0 TDI (CRBC/CRLB/CUNA/DFGA/DFHA/DETA/CUAA/DTTA/DTUA/DTIA) | moderate |
| Timing belt - interference engine, preventive replacement | 2.0 TDI CR EA189 (CBAB/CBDC/CFFB/CFHC/CAGA/CBBB/CFGB/CJCA/CLJA/CNHA) | high |
| Dieselgate NOx software - recall update must be completed | 2.0 TDI CR EA189 (CBAB/CBDC/CFFB/CFHC/CAGA/CBBB/CFGB/CJCA/CLJA/CNHA) | high |
| High-pressure fuel pump (Bosch CP4.1) failure - metal debris through the fuel system | 2.0 TDI CR EA189 (CBAB/CBDC/CFFB/CFHC/CAGA/CBBB/CFGB/CJCA/CLJA/CNHA) | high |
| DPF clogging and differential-pressure sensor faults | 2.0 TDI CR EA189 (CBAB/CBDC/CFFB/CFHC/CAGA/CBBB/CFGB/CJCA/CLJA/CNHA) | moderate |
| Early Siemens piezo injector failure (170 PS CR) | 2.0 TDI CR EA189 (CBAB/CBDC/CFFB/CFHC/CAGA/CBBB/CFGB/CJCA/CLJA/CNHA) | moderate |
FAQ
Is the Audi A6 reliable?
The Audi A6 has 2 engine options with reliability scores ranging from 62/100 (CAUTION) to 69/100 (ACCEPTABLE). Average reliability: 66/100.
Which Audi A6 engine is most reliable?
The EA288 2.0 TDI (CRBC/CRLB/CUNA/DFGA/DFHA/DETA/CUAA/DTTA/DTUA/DTIA) is the most reliable engine in the Audi A6, scoring 69/100 (ACCEPTABLE).
What problems does the Audi A6 have?
Across all engine variants, the Audi A6 has 17 known issues. The most common are related to Switchable water pump / control slide failure - overheating (built to Sep 2014), Timing belt - interference engine, long official interval, DPF clogging and fuel dilution of the oil on short trips.