Audi S4 (B5)

181 sales analyzed · 5 topics from real Bring a Trailer & Cars & Bids comments.

“A stage 3 sleeper is the way to go here.”mrdeezy · Jun 8, 2021

• The 2.7T is a timing-BELT motor, not chainsmechanical
  A recurring correction: the B5 S4's 2.7T uses a timing belt (unlike the chain-driven B6/B7 4.2 V8). It's an interference engine, so the belt — typically with the main and auxiliary water pumps — is critical interval maintenance (~every 75k miles / 7 years). …
• K03 turbos — durable when respected, but a known failure pointmechanical
  The stock K03 turbos can fail (sometimes catastrophically), but owners report very high mileage when the car is treated right — no boost until oil temp comes up. Many cars are upgraded to K04s anyway. …
• The definitive Audi tuner platform — most cars are modifiedcommunity-sentiment
  The 2.7T is endlessly tunable and the B5 S4 is THE Audi 'stage 3' sleeper — K04s, fueling, chips routinely pushing 400+ hp on the original block. Great as a learn-on, build-it platform, but it means stock, unmodified, well-documented cars are the rarer (and more collectible) find. …
• Cheap, known age niggles: DIS pixels, control arms, headlinerinterior
  Expect the era's familiar wear: the DIS gauge-cluster display loses pixels (a ~$150 refurb), front control-arm bushings wear (a clunk/squeak, ~$250-1,500 kit), and headliners sag. None are dealbreakers — they're documented, inexpensive fixes — but factor them into a 20+ year-old car. …
• Tiptronic vs. 6-speed manualdrivetrain
  Offered with a 6-speed manual or a Tiptronic automatic. Enthusiasts prize the manual, but the community notes Tiptronic cars are often less-modified and gentler-lived — a consideration if you want a stock, original example over a built one. …