2021 AUDI S4 3.0 S4 Black Edition Tdi Quattro Auto 4WD 5dr

The Audi S4 has long been a favourite among enthusiasts seeking a blend of performance and everyday refinement. Spanning several generations, from the B5 era's turbocharged V6 to the supercharged V6 of the B8 and B8.5, and the latest B9's turbocharged V6, it consistently offers a more potent alternative to the standard A4, without straying into the full-fat RS territory. It's an ideal choice for the discerning driver who wants impressive straight-line speed and quattro all-wheel drive stability, coupled with a luxurious, well-appointed interior.

Why Buy a Used Audi S4?

• Punchy performance: With powerful V6 engines (be it turbocharged or supercharged), the S4 delivers exhilarating acceleration perfect for both motorways and B-roads.
• Subtle styling: Unlike some sport saloons, the S4 maintains a discreet aesthetic, blending in whilst offering significant performance under the bonnet.
• Quattro all-wheel drive: Audi's renowned quattro system provides superb grip and confidence in all UK weather conditions, making it a capable year-round performer.
• Premium interior: The S4 inherits the A4's high-quality cabin, featuring excellent materials, advanced technology, and comfortable seating, ideal for longer journeys.

Typical Price Range

All prices are approximate and subject to change based on condition, mileage, specification, and market conditions.

• 2009–2015 (B8/B8.5): £8,000 – £18,000 — Represents excellent value for the supercharged V6, but ensure diligent service history and potential for higher mileage. Prices vary significantly based on condition and spec.
• 2016–2019 (B9): £20,000 – £30,000 — The current generation, featuring the 3.0 TFSI turbo V6. Offers modern tech and refined performance. Prices depend on mileage, pre-facelift vs. facelift, and optional extras.
• 2020 onwards (B9 Facelift): £32,000 – £45,000+ — Later models feature updated infotainment, subtle styling tweaks, and cleaner engines. These are still relatively new, commanding higher prices but offering excellent condition and lower mileage.

Common Issues to Check

• B8/B8.5 supercharger issues: Some 3.0 TFSI supercharged engines can develop issues with the supercharger, particularly with excessive noise or clutch pack wear. Listen for unusual whines.
• DSG (S-Tronic) gearbox mechatronics: The S-Tronic automatic gearbox in earlier models can sometimes suffer from mechatronic unit failures, leading to erratic shifting. Check for smooth gear changes during a test drive.
• B9 turbocharger wastegate: The B9's 3.0 TFSI turbocharged engine can have wastegate issues or turbocharger failures, although less common. Look for excessive smoke or loss of power.
• Carbon build-up: Common in direct-injection engines, carbon build-up on intake valves can affect performance. A full service history, especially with evidence of 'walnut blasting', is a good sign.
• Suspension components: Given its performance orientation, wear and tear on suspension bushes, shock absorbers, and control arms can occur. Listen for knocks or creaks over bumps during an MOT-style check.

Running Costs

• Fuel Economy: Generally 25-35 mpg (B8/B8.5) or 30-38 mpg (B9) depending on driving style and specific model. Expect lower figures for spirited driving.
• Insurance Group: Typically falls into insurance groups 39-44. Premiums will vary significantly based on age, driving history, and postcode.
• Servicing: Main dealer servicing can be pricey, but independent Audi specialists offer competitive rates. An interim service is usually required annually or every 10,000 miles, with a major service every two years or 20,000 miles. Factor in potential for brake and tyre replacement as these are high-performance consumables.

Which Variant Should I Choose?

• S4 Saloon: Perfect for those who appreciate classic saloon styling and a slightly stiffer chassis setup compared to the Avant. Ideal for the professional who needs performance without compromising on luxury.
• S4 Avant (Estate): Combines all the S4's performance prowess with enhanced practicality thanks to its larger boot space. An excellent choice for families or individuals needing to carry more gear, whilst still enjoying a thrilling drive.
• S4 TDI (B9 Facelift from 2019): Introduced with the facelift B9, this variant swaps the petrol V6 for a powerful 3.0 V6 TDI with mild-hybrid technology. It's suited for drivers who cover high mileage and prioritise fuel economy and torque, without sacrificing outright performance too much. ULEZ compliant.

All listings on Carslink.ai are sourced directly from dealer stock feeds. Always verify listing details, prices, and vehicle condition directly with the seller before purchasing.