Audi Q7 4L
Weaknesses, engine ratings and buying advice
500 PS
6.0L TDI V12 Diesel
Sports SUV with real bite
Fun to Drive!280 PS
3.6L FSI V6 Benzin
6 weaknesses
Stay Away!Generations
Engine Overview
The Audi Q7 4L is available with 6 engine variants — from 204 to 500 hp. 2 variants had engine changes — the model year is crucial.
The Audi 3.0L TDI V6 (Diesel, 232–245 PS) comes with 3 different engines: BUG (2006–2010, Be Careful) und CASA (2010–2015, Be Careful) und CASB (2011–2015, Stay Away!). Pay attention to the model year for the 3.0L TDI V6!
The Audi 4.2L TDI V8 (Diesel, 326–340 PS) comes with 2 different engines: BTR (2007–2009, Be Careful) und CCFA (2012–2015, Be Careful). Pay attention to the model year for the 4.2L TDI V8!
The Audi 6.0L TDI V12 (Diesel, 500 PS) has the CCGA (6.0L TDI V12) — rated: "Be Careful", 6 known weaknesses.
The Audi 3.6L FSI V6 (Benziner, 280 PS) has the BHK (3.6L FSI V6) — rated: "Stay Away!", 6 known weaknesses.
The Audi 4.2L FSI V8 (Benziner, 349 PS) has the BAR (4.2L FSI V8) — rated: "Stay Away!", 8 known weaknesses.
The Audi 3.0L TDI V6 Hybrid (Diesel Hybrid, 258 PS) has the CASA-ETR (3.0L TDI V6 Hybrid) — rated: "Be Careful", 5 known weaknesses.
Vehicle Weaknesses
| Weakness | Cost | |
|---|---|---|
| Air Suspension: Compressor and Air Bag Failures Air bags become porous, the WABCO compressor overheats and fails. The rear axle typically drops first. Full repairs regularly cost 2,000–3,500 €. Symptoms: Vehicle drops on one side or overall, loud compressor noise, ride height control fault message, vehicle at minimum height from 100,000 km | High |
Top Reported Issues
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Known Problems and Issues
A total of 56 weaknesses have been documented for the Audi Q7 4L (2006–2015) — 51 engine-related and 5 vehicle-related. 3 problem engines: BHK (3.6L FSI V6), BAR (4.2L FSI V8), CASB (3.0L TDI V6). Typical issues affect Suspension, Other, Brakes, Body.
Q7 (BUG, 2006–2010) — Be Careful: Timing chain and guide rail wear, Brake servo membrane damaged by oil vapour, Defective piezo injectors. Power: 232–239 PS.
Q7 (BTR, 2007–2009) — Be Careful: Dual turbocharger failure, Timing chain wear — V8, MAF sensor failure (dual). Power: 326 PS.
Q7 (CCGA, 2007–2014) — Be Careful: Twin turbocharger failure, Injector wear (12 injectors), Head gasket failure from heat. Power: 500 PS.
Q7 (CASA, 2010–2015) — Be Careful: Timing Chain Wear and Guide Rail Breakage, Injectors and Fuel Pressure Loss, Dual-Mass Flywheel Wear. Power: 232–245 PS.
Q7 (CASB, 2011–2015) — Stay Away!: Complex Four-Chain Drive Stretched, Ring Land Fracture — High-Pressure Piston Failure, Swirl Flap Screw Comes Loose — Engine Damage. Power: 239–245 PS.
Q7 (CCFA, 2012–2015) — Be Careful: Bi-Turbocharger Failure, Timing Chain Wear V8 (Revised Engine), MAF Sensor Fault (Dual Sensors). Power: 340 PS.
Q7 (BHK, 2006–2010) — Stay Away!: Timing chain tensioner failure, Piston slap — known mass problem 3.2 FSI, Severe intake valve carbon build-up (FSI direct injection). Power: 280 PS.
Q7 (BAR, 2006–2015) — Stay Away!: Timing chain jumps — high weight accelerates wear, High oil consumption — typical for FSI V8 in SUV use, Intake valve coking from direct injection. Power: 349 PS.
Q7 (CASA-ETR, 2007–2015) — Be Careful: Timing chain and chain tensioner wear, Recall: HV battery fire risk, EGR valve coking. Power: 204–211 PS.
What to watch out for with the Audi Q7? See the detailed listing of all engine and vehicle weaknesses in the sections above.
Frequently Asked Questions
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Last updated: February 2026 · All information without guarantee