Audi Q8 4M
Weaknesses, engine ratings and buying advice
630–640 PS
4.0L TFSI V8 BiTurbo Benzin
RS Q8 Performance — 630 hp in SUV form
Legendary!245–286 PS
3.0L TDI V6 Diesel
5 weaknesses
Stay Away!Engine Overview
The Audi Q8 4M is available with 8 engine variants — from 245 to 640 hp.
The Audi SQ8 (Diesel, 435 PS) has the CZAC (4.0L TDI V8 BiTurbo) — rated: "Be Careful", 5 known weaknesses.
The Audi 3.0L TFSI V6 (Benziner Mild-Hybrid, 340 PS) has the CREA (3.0L TFSI V6) — rated: "Be Careful", 7 known weaknesses.
The Audi RS Q8 (Benziner Mild-Hybrid, 600 PS) has the DCSA (4.0L TFSI V8 BiTurbo) — rated: "Be Careful", 10 known weaknesses.
The Audi RS Q8 Performance (Benziner Mild-Hybrid, 640 PS) has the DJTB (4.0L TFSI V8 BiTurbo) — rated: "Be Careful", 10 known weaknesses.
The Audi SQ8 (Benziner Mild-Hybrid, 507 PS) has the DCU (4.0L TFSI V8 BiTurbo) — rated: "Be Careful", 10 known weaknesses.
The Audi 55 TFSI e (Benziner Plug-in-Hybrid, 381 PS) has the DCBE (3.0L TFSI e V6) — rated: "Be Careful", 9 known weaknesses.
The Audi 60 TFSI e (Benziner Plug-in-Hybrid, 462 PS) has the DCBE (3.0L TFSI e V6) — rated: "Be Careful", 9 known weaknesses.
The Audi 3.0L TDI V6 (Diesel Mild-Hybrid, 286 PS) has the CVMD (3.0L TDI V6) — rated: "Stay Away!", 5 known weaknesses.
Vehicle Weaknesses
| Weakness | Cost | |
|---|---|---|
| Recall: Rear Axle Nut Incorrectly Torqued On Q8 models from 2019–2021 (action 42L1) an incorrectly torqued rear axle nut can alter wheel alignment and affect driving stability. Free repair at dealer. | Low | |
| Air Suspension — Compressor and Air Bag Integrity The Q8 4M air suspension shows typical weaknesses on residual pressure hold valves (approx. 50 € part) and air bags. Warning light illuminates, vehicle drops on one axle, compressor runs continuously to the point of overheating. Symptoms: Yellow air suspension warning light, vehicle leaning on one side, ride height no longer controllable. from 100,000 km | High |
Top Reported Issues
Alternatives
BMW XM G09
Großer SUV (2022–2026)
Land Rover Range Rover Sport L461
Großer SUV (2022–2026)
BMW iX I20
Großer SUV (2021–2026)
Land Rover Range Rover L460
Großer SUV (2021–2026)
Toyota Highlander XU70
Großer SUV (2021–2025)
BMW X5 M F95
Großer SUV (2020–2026)
Known Problems and Issues
A total of 62 weaknesses have been documented for the Audi Q8 4M (2018–2024) — 56 engine-related and 6 vehicle-related. One problem engine: CVMD (3.0L TDI V6). Typical issues affect Suspension, Other, Gearbox, Electronics.
Q8 (CZAC, 2019–2024) — Be Careful: Fuel dilution of engine oil, Electric compressor (EAV) failure, Intake manifold coking. Power: 435 PS.
Q8 (CREA, 2018–2024) — Be Careful: Water Pump Internal Failure with Coolant Migration, Rocker Arm Roller Failure — Early Production, Coolant Leaks from Seals. Power: 340 PS.
Q8 (DCSA, 2019–2024) — Be Careful: Turbo Oil Strainer Clogged — Bearing Starvation, Timing Chain Elongated — Camshaft Synchronisation, Turbo Oil Drain Lines Coked — Shaft Seal Failure. Power: 600 PS.
Q8 (DCU, 2020–2024) — Be Careful: Cylinder Bore Cracks (Recall), Turbocharger Lubrication Problems, 48V Belt Starter Generator Failure. Power: 507 PS.
Q8 (DJTB, 2023–2026) — Be Careful: Turbocharger Bearings — Thermal Stress in V-Position, Turbocharger Oil Supply — Strainer and Drain Lines, 48V Electrical System and Mild Hybrid Components Fault-Prone. Power: 640 PS.
Q8 (DCBE, 2020–2024) — Be Careful: Water Pump Failure EA839 (Critical), Recall 93QQ — High-Voltage Battery Fire Risk, Hybrid Gearbox Failure V6 PHEV. Power: 340 PS.
Q8 (CVMD, 2018–2024) — Stay Away!: Camshaft material defect (recall risk), Timing chain tensioner and chain wear, Intake tract and EGR heavily coked. Power: 286 PS.
What to watch out for with the Audi Q8? 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