The service and repair manual for the 2018 Audi A4 — the 2.0L I4 engine, 8 trims. Matched to this exact model year, so the specifications and sequences are the ones Audi published for your car, not figures carried over from a neighbouring year.
01 / FitmentWhat this manual covers
| Model year | 2018 |
|---|---|
| Engines | 2.0L I4 — 121 cu in, DOHC, turbocharged |
| Trims | Prestige Sedan 4-Door · Select Sedan 4-Door · Premium Sedan 4-Door · S Line Sedan 4-Door · Progressiv Sedan 4-Door · Premium Plus Sedan 4-Door +2 |
| Other 2018 A4 variants | A4 Quattro → · A4 allroad → |
| Federal record | 1 recall · 36 complaints · 730 technical service bulletins (refreshed 2026-08-21) |
02 / InsideSample pages from the 2018 A4 manual
03 / ContentsSections in the manual
- Quick Lookups 240
- General Information 2,507
- Accessories & Equipment 4,367
- Heating, Ventilation & A/C (HVAC) 2,740
- Body & Frame 3,731
- Maintenance 1,068
- Brakes 1,482
- Restraints 451
- Drivelines & Axles 274
- Steering 371
- Electrical 1,144
- Suspension 796
- Engine Mechanical 1,564
- Transmission 693
- Engine Performance 1,080
- Front 200
- Rear 200
04 / Known issuesRecalls on federal record for the 2018 A4
- Seats · 21V874000A disabled passenger air bag increases the risk of injury in the event of a crash.
Owners have filed 36 complaints and Audi has issued 730 technical service bulletins for the 2018 A4. The manual carries the manufacturer's diagnostic and repair procedures behind these systems.
FAQQuestions about the 2018 A4 manual
Is this manual specific to the 2018 A4?
Yes. It is the OEM manual matched to the 2018 model year, covering the 2.0L I4 across the Prestige Sedan 4-Door, Select Sedan 4-Door, Premium Sedan 4-Door, S Line Sedan 4-Door, Progressiv Sedan 4-Door, Premium Plus Sedan 4-Door, Dynamic Sedan 4-Door, Komfort Sedan 4-Door trims. Specifications and procedure sequences are the ones Audi published for this year.
What 2018 A4 problems does it help with?
1 recall is on federal record for the 2018 A4, covering seats. The manual carries the manufacturer's diagnostic and repair procedures for those systems; the recall repairs themselves are done free by Audi dealers.
Does it include 2018 A4 wiring diagrams?
Yes — the complete wiring diagrams for the 2018 build, alongside repair procedures, specifications and diagnostics.
Is it a subscription?
No. $40.99 once and the manual is yours. It is a digital manual — nothing ships; access details arrive by email after checkout and it works on any device.
RelatedOther A4 years and 2018 Audi models
2024 A4 · 2023 A4 · 2022 A4 · 2021 A4 · 2020 A4 · 2019 A4 · 2017 A4 · 2016 A4 · 2015 A4 · 2014 A4 · 2013 A4 · 2012 A4 · all 29 years
2018 Audi A1 · 2018 Audi A3 · 2018 Audi A3 Quattro · 2018 Audi A3 Sportback e-tron · 2018 Audi A4 Quattro · 2018 Audi A4 allroad · 2018 Audi A5 · 2018 Audi A5 Quattro · 2018 Audi A5 Sportback · 2018 Audi A6 · 2018 Audi A6 Quattro · 2018 Audi A7 · every 2018 model