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Used Audi A6 for Sale

An executive favourite, the used Audi A6 sits above the A4 with limo-like comfort, efficient engines and quattro confidence, plus tech and space for business and family life. Explore fully checked, second hand A6s with flexible finance and Vertu's 14-day money-back guarantee-find your next used Audi A6 with Vertu.

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Used Audi A6: Buyer's Guide

The Audi A6 asserts itself as the definitive all-rounder in the executive class, designed for drivers who demand precision and reliability. From the moment you step inside, the high-quality materials and hushed cabin create a sense of serenity and sophisticated comfort. With fuel economy reaching up to 52 mpg, it is a logical choice for the discerning professional.

Used Audi A6 Popular Trims

  • Sport: The entry-level choice, offering 18-inch alloy wheels, LED headlights, and MMI Navigation Plus as standard.

  • S line: The most popular choice, featuring 19-inch alloys, sport suspension, and S line styling for a sharper look.

  • Black Edition: Builds on S line with 20-inch alloys, black styling pack, and privacy glass for enhanced road presence.

  • Vorsprung: The pinnacle of luxury, featuring adaptive air suspension, panoramic sunroof, and Bang & Olufsen sound.

Used Audi A6 Popular Battery & Drivetrain Options

  • 40 TDI (2.0 Diesel): A 204hp unit offering a balance of performance and economy, ideal for high-mileage drivers.

  • 45 TFSI (2.0 Petrol): The sweet spot for petrol, delivering 265hp and strong acceleration with reasonable running costs.

  • 50 TFSIe (Plug-in Hybrid): Combines a petrol engine with an electric motor for excellent efficiency and low tax benefits.

  • 50 TDI (3.0 Diesel): A powerful V6 diesel with 286hp and quattro all-wheel drive for effortless cruising.

Running Costs:

  • Real-World MPG: Expect between 30 and 52 mpg depending on the engine and driving conditions.

  • Road Tax: Standard annual VED is £195, though cars over £40,000 list price incur a surcharge.

Used Audi A6 Practicality

The A6 is designed to accommodate family life and business needs with ease, offering practical solutions for every day.

  • Boot Space (Saloon): Offers a generous 530 litres of space for luggage, perfect for golf clubs or weekly shopping.

  • Boot Space (Avant): Increases capacity to 565 litres, expanding to 1,680 litres with seats folded and a powered tailgate for easy loading.

  • Legroom: Rear passengers enjoy ample legroom thanks to the efficient packaging of the C8 platform.

Used Audi A6 Key Features

Standard equipment is generous, but key options can add significant value and enhance your daily drive.

  • MMI Touch Response: Dual-screen infotainment system for intuitive control of media and climate.

  • Cruise Control: Makes long motorway journeys effortless and relaxed.

  • Pre-Sense Front: Autonomous braking system for enhanced safety and peace of mind.

  • Virtual Cockpit: A stunning 12.3-inch digital instrument cluster that transforms the driving environment.

  • Comfort and Sound Pack: Adds keyless entry, Bang & Olufsen sound, and a 360-degree camera for a premium touch.

Used Audi A6 Reliability Rating

The A6 is built to last, but a thorough inspection is always recommended to ensure you find a top-quality example.

  • Transmission: Ensure the S tronic automatic gearbox shifts smoothly and without hesitation during your test drive.

  • Electronics: Swipe through the menus to ensure the touchscreen is responsive and free from pixel errors.

  • Suspension: Listen for any knocking sounds over bumps which could indicate worn bushes.

Used Audi A6 Safety Rating

Safety is paramount in the A6, backed by rigorous testing and advanced technology.

  • Euro NCAP: Awarded a full 5-star rating in 2018 testing for complete peace of mind.

  • Key Tech: Includes lane departure warning and parking system plus for enhanced protection.

Awards for the Used Audi A6

  • What Car? Awards: Best Luxury Car (multiple nominations).

  • Auto Express: Commended in the Executive Car class.

  • Fleet News Awards: Recognised for its appeal to business drivers and fleet managers.

Who is the Used Audi A6 Best For?

  • High-Mileage Drivers: The efficient diesel engines and comfortable ride make it perfect for motorway commuting.

  • Families: The Avant model offers the practicality needed for family trips and daily duties.

  • Business Users: Strong residual values and professional image appeal to company car drivers.

Key Alternatives to Consider:

  • BMW 5 Series: Offers a sharper driving experience for enthusiasts.

  • Mercedes-Benz E-Class: Focuses more on traditional luxury and comfort.

Frequently Asked Questions about the Used Audi A6

Is the Audi A6 expensive to maintain compared to other executive saloons?

The Audi A6 offers competitive running costs for a premium executive saloon, with efficient engines and reasonable tax bands.

  • Road Tax: The standard annual VED rate for models registered after April 2017 is £195, though vehicles with a list price over £40,000 incur an additional surcharge.

  • Fuel Economy: The 2.0 TDI and TFSI engines are efficient, with real-world WLTP figures ranging between 30 and 52 mpg.

  • Insurance: Models sit within insurance groups 26-47, offering a wide range of options depending on the engine and trim level chosen.

How does the Audi A6 mild-hybrid system improve fuel efficiency?

The mild-hybrid technology introduced in later models enhances efficiency by recovering energy and allowing the engine to switch off during coasting.

  • Energy Recovery: The 12-volt or 48-volt system captures energy during braking and stores it in a small lithium-ion battery.

  • Coasting Function: It allows the engine to switch off while coasting at speeds between 34 and 99 mph to save fuel.

  • Stop-Start: The system enables the stop-start function to activate from 13 mph, further reducing fuel consumption in urban traffic.

What should I check when buying a used Audi A6?

The Audi A6 is a robust and well-engineered vehicle, but a few specific checks will ensure you find a top-quality example.

  • Electronics: Check that the MMI Touch Response screens and Virtual Cockpit are functioning correctly and free from pixel errors.

  • Diesel Particulate Filter: On diesel models, ensure there are no warning lights related to the DPF, especially if the car has been used for short journeys.

  • Suspension: Listen for any knocking sounds over bumps which could indicate worn bushes.

Does the Audi A6 come with Apple CarPlay and Android Auto?

Yes, smartphone integration is a key feature of the Audi A6's MMI infotainment system across the 2018-2025 range.

  • Standard Connectivity: Apple CarPlay and Android Auto are standard on most models, allowing seamless access to your phone's apps.

  • MMI Interface: These systems are controlled via the intuitive MMI Touch Response screens.

  • USB Ports: Ensure you use a high-quality USB cable connected to the correct port to enable the interface.

How does the Audi A6 Virtual Cockpit enhance the driving experience?

The Audi Virtual Cockpit replaces traditional dials with a high-resolution digital display that puts key information directly in your line of sight.

  • Customisable Display: You can switch between a classic view with large dials and an infotainment view with a smaller speedometer and rev counter.

  • Navigation: The system can display full-screen 3D navigation maps directly behind the steering wheel for easier route guidance.

  • Clarity: The 12.3-inch screen offers crisp graphics and fluid animations, making it easy to read at a glance.

Is the Audi A6 available with quattro all-wheel drive?

Yes, the legendary quattro all-wheel-drive system is widely available across the Audi A6 range, providing enhanced traction and stability.

  • Availability: You will find quattro fitted to higher-powered petrol and diesel engines, as well as the S6 performance model.

  • Performance: The system automatically distributes power between the front and rear axles to maximise grip in all weather conditions.

  • Standard Fitment: Quattro is standard on many V6 models and optional on some 4-cylinder versions.

What is the difference between the Audi A6 Saloon and Avant boot space?

The Audi A6 Avant offers greater practicality and easier loading compared to the Saloon, making it ideal for those needing extra space.

  • Saloon Capacity: The Saloon offers a respectable 530 litres of boot space with the rear seats in place.

  • Avant Capacity: The Avant increases this to 565 litres with the seats up, and expands to 1,680 litres with the rear seats folded flat.

  • Loading: The Avant features a powered tailgate and a lower loading lip, making it easier to load heavy or bulky items.

Can the Audi A6 tow a caravan or trailer effectively?

The Audi A6 is a capable tow car, particularly when equipped with the torque-rich diesel engines and quattro all-wheel drive.

  • Towing Capacity: While specific limits vary by engine, the A6 is generally capable of towing braked trailers, with strong stability at speed.

  • Engine Choice: The 3.0 TDI engines offer excellent torque, making them well-suited for towing duties.

  • Stability: The long wheelbase and sophisticated suspension setup contribute to a stable and controlled towing experience.

How do I update the MMI navigation system in my Audi A6?

Keeping your MMI navigation system up to date ensures you have the latest maps and route information for your journeys.

  • Over-the-Air: Later models with Audi Connect can receive map updates over-the-air directly to the vehicle.

  • MyAudi: You can often download updates via the myAudi online portal and transfer them to the car using an SD card or USB stick.

  • Dealer Update: Your local Vertu Audi dealership can also perform a full system update during your next service.

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