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Classic Audi A6 For Sale

The Audi A6, positioned in the upper mid-range class, replaced the Audi 100 in 1994 and belongs to Audi's C-series. Renowned for its quality and reliability, the Audi A6 has evolved through numerous models and engine variations, including both sedan and wagon versions (known as Avant at Audi). The first generation, identified as C4, introduced a new model concept and quickly established itself as a premium option in the automotive market. Its popularity has continued through subsequent generations from C5 to the current C8, with continuous innovations like the Quattro all-wheel-drive and diverse powertrain options.

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Image 1/50 of Audi A6 1.8 T (2000)
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2000 | Audi A6 1.8 T

2000 Audi A6 1.8T

Auction vehicle
🇬🇧
Auction house
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Image 1/50 of Audi RS6 Avant (2015)
1 / 50
$79,313
🇬🇧
Dealer
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Image 1/17 of Audi RS6 (2004)
1 / 17

2004 | Audi RS6

Audi RS6 

$46,645
🇩🇪
Dealer
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Image 1/39 of Audi RS6 Avant (2002)
1 / 39

2002 | Audi RS6 Avant

AUDI RS 6 AVANT 4.2 QUATTRO TIPTRONIC (450 CV) of 2002

$34,507
🇪🇸
Dealer
Show vehicle
Image 1/33 of Audi S6 Avant (2000)
1 / 33

2000 | Audi S6 Avant

Audi S6 4.2 V8 340 hp quattro C5

$20,635
🇪🇸
Dealer
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Image 1/49 of Audi S6 Avant 5.2 V10 quattro (2006)
1 / 49
Show vehicle

Audi A6 listing references from Classic Trader

Below you will find listings related to your search that are no longer available on Classic Trader. Use this information to gain insight into availability, value trends, and current pricing for a "Audi A6" to make a more informed purchasing decision.

Expired listing
Image 1/15 of Audi S6 Avant (2000)

2000 | Audi S6 Avant

AUDI S6 AVANT 4.2 V8 340CV TIPTRONIC (2000) ISCRITTA ASI CON C.R.S. – SUPERCONSERVATO – SUPERPREZZO

$16,8203 months ago
🇮🇹
Dealer
Expired listing
Image 1/18 of Audi A6 4.2 FSI allroad quattro (2007)

2007 | Audi A6 4.2 FSI allroad quattro

Audi A6 allroad  4.2 FSI -2. Hd.- scheckheft

$11,9654 months ago
🇩🇪
Dealer
Expired listing
Image 1/50 of Audi A6 3.0 TDI allroad quattro (2012)

2012 | Audi A6 3.0 TDI allroad quattro

2012 Audi A6 Allroad Quattro V6 (3.0 litre)

Price on request5 months ago
🇬🇧
Dealer
Expired listing
Image 1/14 of Audi RS6 Avant (2008)

2008 | Audi RS6 Avant

"RS6 V10 in collector's condition!"

$78,5617 months ago
🇨🇭
Private seller
Expired listing
Image 1/17 of Audi RS6 (2004)

2004 | Audi RS6

Audi RS6  4.2 tiptronic quattro

$51,8478 months ago
🇩🇪
Dealer
Expired listing
Image 1/19 of Audi RS6 Avant (2022)

2022 | Audi RS6 Avant

ABT SIGNATURE EDITION JOHANN ABT RS6-R

$345,0669 months ago
🇮🇹
Dealer
Expired listing
Image 1/25 of Audi RS6 Avant (2021)

2021 | Audi RS6 Avant

C8 1ST OWNER - 21% VAT DEDUCTIBLE

$126,4099 months ago
🇧🇪
Dealer
Expired listing
Image 1/8 of Audi RS6 Avant (2004)

2004 | Audi RS6 Avant

FMDSH - Low Miles - 3 Owners

$37,67812 months ago
🇬🇧
Dealer
Expired listing
2024 auf Winterfelge

2007 | Audi A6 3.2 FSI quattro

Youngtimer in spe aus 1. Hand, Garagenwagen, sehr gepflegt

$14,739last year
🇩🇪
Private seller

Audi A6 Classic Cars: Prices & Market Values

The market value of Audi A6 classic cars is primarily determined by the specific manufacturer code and variant, as well as technical condition, originality and mileage. Additional factors include rarity, history and documentation. A well-maintained, largely original vehicle with low, verifiable mileage and complete history including appraisals and documentation typically achieves significantly higher prices than a comparable vehicle with deferred maintenance, many modifications or unclear provenance.

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Audi A6: Market Prices & Value Trends

Classic Trader marketplace sales data for the Audi A6 family (including A6, S6 and RS6 variants) from January 2021 to January 2026 shows a broadly stable-to-firm market, with the biggest movements coming from model mix rather than a simple year-on-year rise. Mainstream A6 and allroad models from the late 1990s to mid-2010s typically sit in the lower band, with realistic asking levels often around £3,000–£20,000 depending on mileage, maintenance and quattro specification. Performance derivatives carry the premium: early RS6/S6 cars (roughly 2002–2008) commonly trade in the mid-teens to high-£30,000s, while newer RS6 Avant examples from 2020–2023 are frequently marketed around £75,000–£115,000. A handful of very high-price, heavily modified listings appear, but these are outliers and should not be treated as the norm. In the UK and across European adverts, demand is supported by the RS6’s reputation as a usable modern classic and by limited supply of well-kept, unmodified cars, which helps prices stabilise at the top end.

Features of the Audi A6

The Audi A6 is noted for its exceptional comfort and technological advancements. Highlights include a luxurious interior featuring premium materials such as Alcantara headliners and walnut wood trim. The models offer regular technical checks and comprehensive Audi services. Interest is particularly strong in steel body models and the sporty versions like the S6 and RS6. The A6 C5 holds a notable market share, with 3.4% of the available selection and 3.0% of demand, making it a sought-after classic model from Audi.

Technical Specifications

Buying Advice & Common Issues

When considering a used Audi A6, potential buyers should focus on its maintenance history and service records. Although the A6 is noted for its reliability, there are known weaknesses such as heavily used brakes and suspension wear, which can be mitigated through regular inspections and maintenance. Keeping up with the service booklet is a good indicator of a dependable vehicle history and should be a priority. Access to genuine Audi parts and qualified service partners is crucial for the vehicle's long-term upkeep.

Engine & Performance, Transmission & Handling

The Audi A6 combines power with driving comfort. Equipped with engines reaching up to 600 HP in the RS6 versions, it delivers dynamic performance intertwined with Audi's famed technology. Models like the A6 3.0 TDI boast efficient diesel engines, particularly appealing to long-distance drivers. The wide range of transmissions, from manual to automatic or Multitronic, caters to diverse driving preferences. The available Quattro all-wheel-drive system enhances the driving experience, ensuring safety under challenging conditions.

Interior, Comfort, Exterior & Design

Famed for its luxurious interior, the Audi A6 offers options like anthracite leather, Recaro seats, and other high-quality materials including wood applications. Exterior colors are often selected in metallic tones to give the car an elegant appearance. High-end sound systems by BOSE and advanced navigation systems are part of the premium package. The Avant wagon models provide exceptional storage space and usage flexibility. Optional features like alloy wheels and three-spoke sport steering wheels highlight its dynamic look.

Summary

The Audi A6 has secured a reputation as a versatile and impressive vehicle in the classic car community. With a successful blend of technological innovation, reliable construction, and appealing design, the Audi A6 has cultivated a dedicated following both as a new vehicle and as a classic car. Buyers of a used Audi A6 benefit from the brand's extensive experience and well-established quality. Its refined interior, dependable powertrains, and customizable options make it a worthy investment for any classic car enthusiast.