Audi · Known Issues
2018 Audi Q7 Problems: 5 Known Issues
2018 model year · 850+ owner reports · Updated September 2026
2018 · All trims · All engines
Choose the year and equipment for your written issues and visual request.
2018 model year · 850+ owner reports · Updated September 2026
2018 · All trims · All engines
Choose the year and equipment for your written issues and visual request.
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According to Au7o's analysis of 850+ owner reports, the 2018 Audi Q7 has 5 documented known issues, with 1 rated critical. The most serious is 2017-2018 Q7 4M Fuel Rail Weld Porosity Leak - Safety Recall 24DP / NHTSA 19V035 ($0-$0 repair). The most commonly reported issue is Transfer Case Fluid Leak and Failure with 850 owner reports. Across all issues with published estimates, repair costs range from $300 to $3,500. DIY maintenance guides at au7o.io.
SUSPENSION:FRONT:SHOCK ABSORBER
Volkswagen Group of America, Inc. (Audi) is recalling certain 2019 Q7, Q8, S5 Cabriolet, and S5 Sportback vehicles. The front shock absorber forks may develop cracks allowing the shock absorbers to loosen.
STRUCTURE:BODY:ROOF AND PILLARS
Volkswagen Group of America, Inc. (Audi) is recalling certain 2018-2020 Audi Q7 vehicles. The padding on the vehicle's C-pillar may not absorb enough impact in the event of a crash.
STEERING
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2019 Audi Q8 and 2017-2019 Audi Q7 vehicles. The bolt connecting the steering shaft to the steering gear may loosen, possibly resulting in a loss of steering control.
AIR BAGS:SIDE/WINDOW
Don't see your problem? Describe your symptoms to get a diagnosis, or get a full repair guide.
According to Au7o's analysis of 850+ owner reports, the 2018 Audi Q7 has 5 documented issues. The most frequently reported are: 2017-2018 Q7 4M Fuel Rail Weld Porosity Leak - Safety Recall 24DP / NHTSA 19V035, Transfer Case Fluid Leak and Failure, 3.0 TFSI Intake Valve Carbon Buildup - Direct Injection Deposits Causing Misfire and Power Loss. Of these, 1 is rated critical and should be addressed promptly.
The 2018 Audi Q7 has 5 known issues documented across 850+ owner reports. 1 issue is rated critical: 2017-2018 Q7 4M Fuel Rail Weld Porosity Leak - Safety Recall 24DP / NHTSA 19V035. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
Repair costs for known Audi Q7 issues range from $0 to $3,500, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, 2017-2018 Q7 4M Fuel Rail Weld Porosity Leak - Safety Recall 24DP / NHTSA 19V035, typically costs $0-$0 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
A separate, later fuel rail defect affects the second-generation Q7. Variation in the supplier's welding process left porous or incomplete welds in the left and right fuel rails of the 3.0 TFSI EA839, which can seep or leak fuel under high rail pressure. Audi recalled roughly 74,… Repairs typically run $0-$0. Severity: high.
The Q7 Torsen-based quattro transfer case develops seal leaks and internal wear, particularly at higher mileages. The transfer case output shaft seals are the most common leak point. If fluid level drops too low, the transfer case bearings and gears can be damaged, leading to gri… Repairs typically run $300-$3,500. Severity: medium.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.
Volkswagen Group of America, Inc. (Volkswagen) is recalling certain 2019 Audi Q7 vehicles. In the event of a crash, the side curtain air bags may not properly inflate.
FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:FUEL RAIL
Volkswagen Group of America, Inc. (Audi) is recalling certain 2016-2018 Q7, A6 and A7 vehicles, and 2015-2018 Audi A8 vehicles. The left and right fuel rails may leak fuel.
+ 7 more recalls. Check all on NHTSA.gov
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Both the supercharged 3.0 TFSI (4L) and the EA839 3.0 TFSI (4M) are direct-injected, so no fuel ever washes the back of the intake valves. Oil vapor drawn in through the PCV system plus EGR soot bake onto the valve stems and seats, restricting airflow and preventing the valves fr… Repairs typically run $800-$1,500. Severity: medium.
The second-generation Q7 (4M, MLB Evo) uses a large fluid-filled hydraulic bushing on the front lower control arms to isolate road noise. The rubber splits and the fluid escapes, leaving a loose bushing that lets the arm move against its bracket. Owners hear a hollow clunk, pop o… Repairs typically run $700-$2,200. Severity: medium.
The 4M Q7's dual-screen MMI Touch Response infotainment head unit reboots on its own while driving - screens go black, the system restarts, and radio/navigation/phone drop out, sometimes several times on a long trip. A related and better-documented fault covered by Audi service b… Repairs typically run $0-$1,500. Severity: medium.