any tips for my audi s5 b9.5 coupe maintenance wise?
Hey everyone! I have a B9.5 Audi S5 Coupe sitting at around 42k miles ( I bought it dec 26 2026 with 31k and its aug 18 now at 42k ) and wanted to get some advice from people who have owned these for a while. I’m trying to stay ahead of maintenance and take care of the car as best as possible rather than waiting for things to go wrong.
So far, upgrade-wise, I’ve done:
- IE Race Series FDS Intercooler System
- Upgraded IE charge pipes
- IE Carbon Fiber Intake System with upgraded turbo inlet pipe
- 034Motorsport Transmission Mount Insert
- Valvetronic exhaust
What maintenance items would you recommend doing around this mileage, either early or more often than Audi recommends? Are there any common issues or weak points on the B9.5 S5/3.0T that I should start keeping an eye on?
I’m especially curious about oil change intervals, transmission service, differential fluids, spark plugs/coils, coolant system/water pump, PCV, brakes, suspension components, carbon buildup, or anything else that becomes important around 40–50k miles.
Also, with the upgrades I already have is there anything maintenance wise I should be more proactive about compared to a completely stock car?
Would love to hear what you guys have done around this mileage and anything you wish you knew earlier. I’m trying to keep the car reliable and running strong long-term while still enjoying it.