Service history · Digital service history
Audi A4 maintenance & provenance
The A4 B9 (MLB Evo, 2015–2024) is the volume Audi saloon. EA888 timing chains, cooling-system plastics and quattro service proof belong in the digital history.
Featured Provenance Guide
Audi — DSP, S tronic & quattro Provenance Guide
Audi Digital Service Plan (DSP), erWin/ODIS validation, S tronic & Tiptronic ATF, Haldex, quattro with ultra technology, EA888, e-tron SOH and provenance checklist for UK and EU owners — A3, A4, A6, Q5, Q7, TT and e-tron.
Read full guide →Generations & platforms
A4 B8 (2008–2015)
MLB · EA888 Gen2 · EA189 · ZF 8HP
A4 B9 (2015–2024)
MLB Evo · EA888 Gen3 · EA288 · ZF 8HP
Common owner-reported themes
Not diagnostic advice — themes owners often document in service history. Always verify for your exact engine and year.
EA888 timing-chain stretch
2.0 TFSI B9 engines can rattle on cold start when the chain kit wears. A dated chain/tensioner job is high-value provenance.
Thermostat housing and water pump
Plastic coolant parts crack with age. Invoice the complete housing/pump, not a top-up story.
Quattro / Haldex (some variants) fluid
Quattro diffs and, on some layouts, clutch couplings need oil. Log the spec used — buyers of B9 A4s ask.
Guides & checklists
More Audi models
Compare platforms, service themes and digital service history tools across the range.
FAQ
How often should you service a Audi A4?+
Follow the manufacturer interval for your engine and year (typically annual or mileage-based). Track each service, parts and mileage in The Owners Club to prove Full Service History when you sell.
What platforms does the Audi A4 use?+
Depending on generation, the A4 is associated with: MLB, MLB Evo. Knowing your platform helps find shared guides, parts and known service themes across the brand group.
How do I prove service history for a Audi A4?+
Keep a chronological record of services, DIY repairs, parts invoices and mileage. UK owners can import official MOT history from DVSA and attach private work next to it. Start with a free digital service history on The Owners Club.
Own a Audi A4? Protect its resale value
Add it to The Owners Club for free to track its maintenance timeline, import UK MOT history, and transfer verified provenance when you sell.