Vehicle

Audi A7

The five-door coupé, and an A6 in every system that sets a code — 4G under the first car, C8 under the second — so A6 information is the information. What is worth knowing before diagnosing one is that it is heavily equipped by default, which changes where faults come from: adaptive air suspension on many cars, so ride-height and compressor codes are common, and a full complement of driver-assistance radar and camera modules whose calibration state is itself a fault condition after any windscreen or bumper work. On the 3.0 TDI the EGR cooler and the intake swirl flaps recur; on the supercharged 3.0 TFSI the supercharger's own coolant circuit and the timing chain tensioner are the items to check before anything else.

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Audi A7 — Greg Gjerdingen from Willmar, USA · CC BY 2.0 (external)

Generations

4G8 2010–2018

C7 A6 underneath; supercharged 3.0 TFSI and 3.0 TDI, with air suspension driving many of its codes.
- Belt CVT (continuously variable) CVT
- Dual-clutch (DCT / DSG) dual-clutch
Body styles

Liftback

Platform

Volkswagen MLB
Engines
2.8 FSI V6 — petrol · 150 kW (201 hp) · 280 Nm (207 lb-ft)

3.0 TFSI V6 — petrol · 220–250 kW (295–335 hp) · 440 Nm (325 lb-ft) · supercharged

4.0 TFSI V8 — petrol · 309–412 kW (414–553 hp) · 550–700 Nm (406–516 lb-ft) · S7 and RS7

2.0 TDI — diesel · 150 kW (201 hp)

3.0 TDI V6 — diesel · 140–240 kW (188–322 hp)

1.8 — petrol · 140 kW (188 hp) · 320 Nm (236 lb-ft)

2.0 — petrol · 185 kW (248 hp) · 370 Nm (273 lb-ft)

2.5 V6 — petrol · China

3.0 V6 — petrol · 220–250 kW (295–335 hp) · 440 Nm (325 lb-ft)

4.0 V8 — petrol · 309–412 kW (414–553 hp) · 550–700 Nm (406–516 lb-ft)
Transmissions

7-speed S tronic · 8-speed tiptronic · multitronic CVT · 7-speed dual clutch S tronic · 8-speed ZF 8HP automatic

Drivetrain

Front-wheel drive · quattro four-wheel drive
4K8 2018–present

C8 A6 architecture with 48-volt mild hybrid across the range and a second, rear-mounted control unit for the assistance systems.
- Dual-clutch (DCT / DSG) dual-clutch
Body styles

Liftback

Platform

Volkswagen MLB Evo
Engines
2.0 TFSI — mild hybrid

3.0 TFSI V6 — mild hybrid

4.0 TFSI V8 — mild hybrid · RS7

2.0 TDI — mild hybrid

3.0 TDI V6 — EA897 · mild hybrid

2.0 TFSI e — plug-in hybrid

2.9 turbo V6 — petrol · S7
Transmissions

7-speed S tronic · 7-speed dual clutch S tronic · 8-speed automatic tiptronic

Drivetrain

Front-wheel drive · quattro four-wheel drive

Information, not instruction

CarGeek is a reference, not a service manual. Its pages are written from public sources and from what other people have found, never from a manufacturer's own service information, so they can be wrong or incomplete for your particular vehicle. Some of what they describe carries real risk: high voltage, fuel under pressure, stored energy, hot and moving parts.

Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.

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