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About the Audi A6 C8
AI-generatedThe Audi A6 C8, launched in 2018, represents the fifth generation of Audi's executive saloon and marked a significant technological leap forward. Built on the MLB Evo platform shared with the A7 and A8, it features sophisticated mild-hybrid technology across the range, advanced driver assistance systems, and a completely redesigned interior dominated by dual touchscreens. The C8 generation offers a choice of efficient four-cylinder and powerful six-cylinder engines, with both front-wheel and quattro all-wheel drive configurations. This generation emphasizes digitalization and comfort, featuring Audi's latest MMI touch response infotainment system, optional adaptive air suspension, and Level 2 autonomous driving capabilities. Available as both a saloon (Sedan) and Avant (estate), the C8 A6 competes directly with the BMW 5 Series, Mercedes-Benz E-Class, and Jaguar XF. Build quality is excellent, though the heavy reliance on touchscreen controls has divided opinion. The model received a mild facelift in 2023 with updated styling and revised technology.
Known Issues
Known Issues
C8 (2018-present)
2018-present
- MMI touchscreen system can be slow to respond or freeze, requiring software updates
- Mild-hybrid 48V electrical system faults causing warning lights and reduced performance
- Front suspension creaking noises, particularly with adaptive air suspension models
- Digital instrument cluster flickering or displaying error messages intermittently
- Dual-clutch gearbox (S tronic) hesitation in stop-start traffic on early models
- Climate control touchscreen buttons can be unresponsive or require multiple presses
- Parking sensors and 360-degree camera systems occasionally malfunctioning
- Software glitches affecting adaptive cruise control and lane-keep assist
- LED matrix headlight condensation issues on some early production vehicles
- Battery drain issues related to multiple electronic systems drawing power when parked
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Running Costs
Running Costs
Annual Fuel
£2,200-£3,500
Insurance Group
38-50
Average Service
£450-£650
Cost Calculator
Typical Prices
£35,000 - £48,000
£28,000 - £38,000
£22,000 - £32,000
£20,000 - £28,000
Pros & Cons
Pros & Cons
Pros
- Exceptional build quality and premium interior materials
- Advanced technology and driver assistance systems
- Efficient mild-hybrid powertrains across the range
- Comfortable and refined ride quality, especially with air suspension
- Spacious interior with excellent rear legroom
- Strong towing capacity up to 2,100kg (Avant)
- Impressive virtual cockpit and digital displays
- Strong engine lineup from frugal diesels to powerful V6 petrols
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Best & Worst Years
Best & Worst Years
Best Years
- 2020 - Benefits from early software updates resolving initial bugs, still covered by manufacturer warranty, and available at better value than 2019 models
- 2023 - Facelift model with updated styling, improved software stability, refined driving dynamics, and latest technology features
Worst Years
- 2019 - First production year suffered most software glitches, MMI system issues, and teething problems with mild-hybrid technology integration
Buying Checklist
Engine & Drivetrain6 items
- Check for smooth cold starts - mild-hybrid system should engage seamlessly
- Test drive at various speeds to ensure transmission shifts smoothly without hesitation
- Listen for unusual noises from the engine bay, particularly on diesel models
- Verify quattro all-wheel drive engages properly if equipped
- Check for oil leaks around engine bay and undertray
Did You Know?
Did You Know?
Every C8 A6 engine features 48-volt mild-hybrid technology as standard, allowing up to 40 seconds of coasting with the engine off
The C8 generation was the first A6 to completely eliminate physical buttons for climate control, using only touchscreens
Audi's predictive active suspension can scan the road ahead and adjust damping before hitting bumps
The A6 Avant offers up to 1,680 litres of boot space with seats folded, more than most rivals
Alternatives to Consider
BMW 5 Series G30
7/10More engaging to drive with sharper handling, rear-wheel drive bias, and simpler control layout with physical buttons
Mercedes-Benz E-Class W213
7/10More luxurious interior, superior ride comfort, and slightly better reliability record with electronics
Volvo S90/V90
Comparable technology and comfort at lower prices, excellent safety credentials, and Scandinavian minimalist design
Jaguar XF X260
More characterful styling, engaging dynamics, and typically available at lower prices on the used market
Owner Tips
- 1Ensure all software updates have been applied to resolve early MMI and electronic issues
- 2Check the mild-hybrid system thoroughly - look for any warning lights or battery-related messages
- 3Test all touchscreen functions extensively during viewing, including climate controls
- 4Verify that adaptive cruise control and lane-keep assist work smoothly without sudden interventions
- 5Check service history carefully - these cars require specific software updates at services
- 6Consider extended warranty given the complex electronics and potential repair costs
- 7Air suspension models offer better ride but check for creaking noises from front suspension
- 8Ensure the 360-degree camera and parking sensors all function correctly
- 9
Check a specific Audi A6 C8
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