Audi A3 2012 - 2020 Petrol & Diesel

HaynesSKU: H7005

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Description

This manual provides clear, step-by-step guidance to help you maintain, service and repair your Audi A3 while keeping it reliable and ready for its MOT.

Engines covered

  • 1.4-litre and 1.5-litre petrol engines
  • 1.6-litre and 2.0-litre TDI diesel engines

Models covered

Audi A3 ‘8V’ Petrol & Diesel models (2012–2020)
Includes 3-door Hatchback, 5-door Sportback and Saloon models.
Includes manual and S-tronic (DSG) transmissions.
Excludes: S3, RS3, Cabriolet, Quattro AWD and E-tron (hybrid) models.

The Audi A3 (2012–2020) is the benchmark for the premium hatchback, combining “Vorsprung durch Technik” refinement with everyday practicality. As one of the UK’s most popular executive compacts, these models are known for their high-quality interiors and advanced petrol and diesel engines.

Developed using hands-on workshop experience, this comprehensive manual combines printed instructions with supporting online resources. Hundreds of detailed photos and illustrations guide you through routine servicing and mechanical repairs.

Whether you’re an experienced DIY mechanic or tackling basic maintenance for the first time, this Haynes manual helps you carry out work safely while reducing the “Audi tax” on garage bills.

Designed for real-world UK ownership

  • High-mileage commuting: Covers systems subjected to heavy use, including timing belts, cooling systems and turbochargers.
  • Premium DIY care: Provides torque settings and fluid specifications to maintain performance and reliability.
  • MOT tasks: Guidance for checking key MOT areas, including braking systems, electronic parking brakes, suspension and lighting.

Audi A3 maintenance and fault-finding

Despite its premium build, the A3 8V requires regular attention to its key systems. This manual includes checks and repair procedures for:

  • Engine health and ignition system maintenance
  • Water pump and cooling system component replacement
  • S-tronic transmission fluid checks and servicing
  • Braking, steering and suspension component repairs

What you’ll find inside the manual

  • Routine maintenance and servicing procedures
  • Detailed petrol (TFSI) and diesel (TDI) engine repair procedures
  • Cooling, heating and air conditioning system maintenance
  • Fuel, exhaust and emissions control system overviews
  • Starting, charging and ignition systems
  • Clutch and manual or S-tronic transmission servicing
  • Driveshaft, braking, suspension and steering repairs
  • Bodywork, interior fittings and electrical system maintenance
  • Fault-finding procedures and access to interactive online wiring diagrams

Product information

Product information

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