Audi · Known Issues

2003 Audi S6 Problems: 1 Known Issue

2003 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated November 2026

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2003 Audi S6 has 1 documented issue, with 1 rated critical. The most serious is ZF 5HP24 Tiptronic Transmission Valve Body Failure ($1,500-$4,000 repair). Across all issues with published estimates, repair costs range from $1,500 to $4,000. DIY maintenance guides at au7o.io.

2003 · All trims · All engines

Choose the year and equipment for your written issues and visual request.

YearTrimEngine

No email neededHow interest is saved

Interest applies to the selected vehicle and configuration; it is not a reservation. Voting stores a first-party identifier for up to 180 days to prevent repeat votes. No account or email is needed. Clearing cookies or using another device may count separately. Privacy

Visual coming soon

Your interest helps us choose what to build next.

Visual Known Issues · Coming soon

$7.99/month plus taxes at launch on January 1, 2027 · No payment today

Preview the XT6 example

All 1 Known Issue

Filter:

On the 2002-2003 Audi S6, the 2002-2003 S6 (C5, 4.2 V8) uses the ZF 5HP24A five-speed Tiptronic automatic, the all-wheel-drive (quattro) version of the 5HP24. As these transmissions wear, clearance grows between the pressure regulator valve and its bore in the valve body, and line pressure becomes erratic. Pressure spikes cause harsh or banging shifts and a bang on kick-down, and they can break clutch drum "A". A broken drum A shows up as hesitation at takeoff or a failure to engage a forward gear. If pressure leaks away instead, shifts go soft and the clutches can burn. Bore wear can also set slip codes, and the transmission can drop into limp mode. An enthusiast review of these cars calls the transmission a known weak spot.

This issue also affects: Audi A4 Avant, Audi A4, Audi A8

Common Symptoms

Harsh or banging shifts
Bang on kick-down
Hesitation at takeoff or no forward gear
Transmission limp mode
Gear hunting on hills

How to Fix

What to check first: 1) Scan the transmission control module for stored faults. Slip codes and forward slip are among the signs of pressure regulator valve bore wear. 2) Check the ATF level and condition. The 5HP24 is specified for ZF Lifeguard fluid (Lifeguard A / Lifeguard 5), so do not top up with generic ATF. Burnt fluid can mean the clutches have already been damaged by low line pressure, so the problem is more than a valve body fault. 3) Note when the problem happens. Harsh or banging shifts and a bang on kick-down point to the pressure regulator valve. Hesitation at takeoff, or no forward gear at all, can mean clutch drum "A" is already broken. Repair path: if the clutches and drum are healthy, a transmission shop can recondition the valve body. The worn pressure regulator valve bore is the usual target, and aftermarket repair kits are made for it (Sonnax 1767 oversized pressure regulator valve kit for the ZF5HP24/24A, TransGo 5HP-24-PR). If drum "A" is broken, the drum, the pressure regulator valve and the lower valve body all have to be replaced. Ask the shop whether the quote covers only the valve body or also includes the drum. We found no Audi recall or warranty extension that covers this transmission on these cars.

Typical repair cost:$1,500 - $4,000

Research This Issue

Google Reddit YouTube NHTSA

Community Reported

Medium ConfidenceUpdated Nov 7, 2026

NHTSA Recalls2 recalls

FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY

VOLKSWAGEN IS RECALLING CERTAIN MODEL YEAR 2001-2004 AUDI A6, MODEL YEAR 2002-2003 S6 AND MODEL YEAR 2003 RS6 VEHICLES EQUIPPED WITH 4.2L ENGINES AND MANUFACTURED FROM JUNE 19, 2001, THROUGH JUNE 8, 2004. THE AGING OF THE PLASTIC MATERIAL IN THE FUEL TANK ROLLOVER VALVE COMBINED WITH BENDING STRESS FROM THE ALUMINUM VENTILATION LINE TO THE ROLLOVER VALVE NIPPLE MAY LEAD TO CRACKING OF THE NIPPLE. IF THIS HAPPENS, A FUEL LEAK MAY RESULT.

Campaign #11V26700003/05/2011

ELECTRICAL SYSTEM

ON CERTAIN PASSENGER VEHICLES, IF A DRIVER'S KNEES PUSH AGAINST THE KNEE BOLSTER (CRASH ELEMENT) LOCATED UNDER THE DASHBOARD, IT CAN CONTACT THE HEADLIGHT SWITCH WIRING HARNESS, AND AN ELECTRICAL SHORT COULD OCCUR.

Campaign #04V13300018/03/2004

Enter your VIN at NHTSA.gov to check recalls specific to your vehicle.

🔧

A mechanic who knows YOUR exact car

Answers tuned to your year, make, model & trim — not generic advice. Save your garage so it always has the right context.

Get ahead of Audi S6 problems — free

Leave your email and we'll alert you the moment there's a new recall or known issue for your Audi S6. Free, no account needed.

Join 700+ subscribers following Au7o for vehicle insights and updates.

Don't see your problem? Describe your symptoms to get a diagnosis, or get a full repair guide.

Other Audi Models

Audi A427 Audi Q326 Audi R826 Audi A623 Audi S720 Audi Q718

Frequently Asked Questions

What are the most common Audi S6 problems?

According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2003 Audi S6 has 1 documented issue. The documented issue is: ZF 5HP24 Tiptronic Transmission Valve Body Failure. Of these, 1 is rated critical and should be addressed promptly.

Is the Audi S6 reliable?

The 2003 Audi S6 has 1 known issue compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 1 issue is rated critical: ZF 5HP24 Tiptronic Transmission Valve Body Failure. 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.

How much does it cost to fix common Audi S6 problems?

Repair costs for known Audi S6 issues range from $1,500 to $4,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, ZF 5HP24 Tiptronic Transmission Valve Body Failure, typically costs $1,500-$4,000 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2002-2003 Audi S6 ZF 5HP24 Tiptronic Transmission Valve Body Failure?

The 2002-2003 S6 (C5, 4.2 V8) uses the ZF 5HP24A five-speed Tiptronic automatic, the all-wheel-drive (quattro) version of the 5HP24. As these transmissions wear, clearance grows between the pressure regulator valve and its bore in the valve body, and line pressure becomes erratic… Repairs typically run $1,500-$4,000. Severity: high.

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.