Buying a Used Audi Q7 (2nd Gen, 2017–2024): Complete Reliability Guide and What to Watch Out For
The second-generation Audi Q7 (2017–2024) brought a major leap in refinement, technology, and handling compared to the original. Built on the MLB Evo platform, shared with the Q8, A6, and Porsche Cayenne, it delivers a luxurious driving experience with strong engines and available 7-seat practicality — making it one of the most desirable family SUVs in the premium segment.
But luxury does not always equal low maintenance costs. If you’re shopping for a used Q7, understanding common problems and key maintenance needs is essential to avoid expensive surprises.
This complete guide covers reliability by engine, drivetrain durability, and which models are the safest buys.
Overall Reliability of the Audi Q7 (4M)
The Q7 4M is generally considered reliable for its class, especially when compared to other high-end German SUVs. Its quattro AWD system remains bulletproof, and both gasoline engines have shown strong longevity.
However, early 3.0 TFSI models and high-tech features like air suspension or driver-assist systems require diligent maintenance — repair costs can be high if neglected.
Common Problems on the Audi Q7 2nd Gen
-
Water pump and thermostat leaks — common on both 2.0T and 3.0T engines
-
MMI system glitches — black screens, lag, or reboots
-
Air suspension leaks — mainly on higher-mileage Prestige trims
-
Door wiring harness issues — leads to window or lock malfunctions
-
Turbo wastegate rattle — on some 2.0 TFSI engines
-
Premature brake wear — especially on heavy city-driven Q7s
-
Battery drain — related to all the onboard electronics
-
Timing chain tensioner noise — rare, but costly if ignored
Most of these issues are manageable if detected early during inspection.
Engine Reliability: 2.0 TFSI (EA888 Gen 3)
The 2.0-liter turbo is the fuel-efficient option, suitable for families who don’t need maximum towing power.
Known reliability notes:
-
Moderate oil consumption can occur around 60k+ miles
-
Carbon buildup on intake valves over time
-
Occasional turbo noise or wastegate wear
-
Valve cover and PCV system failures cause rough running
Best practices for longevity:
-
Oil every 5k–7k miles
-
Intake carbon cleaning every 70k miles
-
Early coolant leak inspection
Verdict: Efficient and dependable when serviced correctly, but not the most powerful choice for such a large SUV.
Engine Reliability: 3.0 TFSI V6 (EA839)
This single-turbo V6 replaced the supercharged EA837 — and is one of Audi’s most robust modern engines.
Strengths:
-
Excellent torque and towing capability
-
Less carbon buildup than previous V6s
-
Very durable turbo design
Watch for:
-
Coolant leaks from plastic thermostat/water pump
-
Occasional oil seepage around filter housing
-
PCV valve failures causing high fuel trims
Verdict: Highly recommended. Strong reliability and performance make the 3.0T the best choice for most buyers.
Transmission and Drivetrain
The Q7 uses the ZF 8HP 8-speed automatic, paired with quattro AWD.
Reliability summary:
-
Extremely durable with fluid changes every 50–60k miles
-
Jerky shifting typically means worn fluid, not hardware failure
-
AWD system is nearly worry-free, but diff fluid should be serviced periodically
Verdict: Excellent transmission — avoid any Q7 with no record of fluid changes.
Other Components to Inspect Before Buying
-
Air suspension (if equipped): Look for sag or compressor noise
-
360° camera system: Replacement modules are costly
-
Virtual cockpit / screens: Dead pixels or flickering screens
-
Driver assist sensors: Radar calibration can be expensive
-
Sunroof drains: A common source of water intrusion
A thorough pre-purchase inspection with scan tools is strongly recommended.
Maintenance Tips for Long-Term Reliability
-
Oil every 5k–7.5k miles with high-quality synthetic
-
Transmission & differential fluid every 50–60k miles
-
Coolant pump and thermostat inspection annually
-
Regular software updates for MMI/ADAS systems
-
Avoid short trips that prevent full engine warm-up
-
Clean intake system on 2.0T models every ~70k miles
-
Replace spark plugs on-time to protect ignition coils
With proper care, the Q7 can easily exceed 150,000+ miles.
Which Q7 Models to Avoid
-
Early 2017 builds with unresolved coolant leaks
-
Vehicles with ignored transmission service
-
Any example with air suspension faults
-
High-tech models showing multiple electrical warnings
-
Ex-rental or fleet vehicles with spotty records
Rule #1: Full maintenance history is non-negotiable.
Upgrade and Customize Your Audi Q7
Give your Q7 a fresh and stylish appearance with our range of premium Audi accessories. Add an aggressive look with RS-style honeycomb grilles, black Audi emblems, carbon-fiber mirror covers, or sporty front lips and diffusers.
Modernize the cabin with CarPlay retrofit kits, interior carbon trims, and upgraded paddle shifters.
Every product is designed for OEM-level fitment and includes free shipping and a 1-year warranty, so you can upgrade your Audi Q7 with total confidence.
Verdict: Is the Audi Q7 2nd Gen Reliable?
✔ Strong, durable engines
✔ Proven ZF 8-speed transmission
✔ Comfortable, high-tech luxury family SUV
⚠ Electrical and cooling repairs can be pricey if neglected
If properly serviced, the Q7 4M is one of the best luxury SUVs you can buy used — refined, powerful, and built for long-term comfort