Audi S5 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your Audi S5

No_car_image
Get a Repair Estimate
Guaranteed by certified locations nationwide. Learn more
Get a Repair Estimate For Your Audi S5
RepairPal estimates are guaranteed at over 1,700 quality certified locations nationwide. Learn more

Audi S5 Problems

No Start after Refueling and Popping Noise from Trunk

Popping sounds from the rear of the vehicle may be heard moments after starting the engine, or when slowing to a stop. This noise is from the leak detection pump filling the fuel tank with air, and releasing to retest the system when it finds a fault. The sequence of faults identifying this issue are as follows:

  • Succession of loud pops from rear of vehicle
  • Pops go away, and fuel economy decreases 
  • Check engine light illuminates
  • OBD trouble code P2404 and/or P0441 is stored
  • Engine will not start after refueling (must crank for over 30 seconds)
  • Vibration when slowing to a stop

The cause is a valve which is mounted on the front of the intake manifold, commonly called the N80 valve, or EVAP system purge valve. The valve is designed to open under specific circumstances, but a worn valve will remain open at all times, preventing the pressurization of the fuel tank. 

Correction of the issue is to replace the N80 valve with the latest revision. 

Decreased Power and Fuel Economy from Carbon Buildup

The 2008-2017 Audi S5 uses the 3.0TFSI and 4.2FSI direct injection engines. These engines are subject to carbon buildup in the intake system which can cause power loss, OBD codes and a check engine light, and a rough idle. In normal engines, the engine is cleaned by the gasoline flowing through the injectors and into the intake system, however, the S5 uses direct injection so gasoline does not flow through common carbon buildup areas. 

Possible trouble codes include: P0300P0301P0302P0303P0304, P0305, P0306.

The solution is to remove the intake manifold and professionally clean the intake manifold, intake ports on the cylinder head, and the intake valves. This may need to be done in as few as 20,000 miles.

See More Problems (2)

Audi S5 Recalls

Potential Fuel Leak

The fuel rail is a tube that carries fuel to the fuel injectors. The fuel rail may leak, increasing the risk of a fire. Dealers will replace the affected fuel rail and corresponding seals to correct this concern.

See More Recalls (1)

Audi S5 Reviews

This car is so good!!!, I planned for two years to get one. I had an 01 A4 for 10 years and I loved this car from the day it came out. I have a 2011 premium plus titanium I got in Feb 2014. Driving this car is so much fun, and the build quality is awesome, with Audis flawless interior and the great 4.2 V8 it makes good noise. The grip is incredible, the only down side is the ride is a little r...

See More Reviews (1)