The Audi S4 Avant stands out as a compelling choice for drivers who demand high performance without sacrificing everyday usability. This estate car combines a muscular 3.0-liter V6 diesel engine with Audi’s renowned quattro all-wheel-drive system, delivering rapid acceleration and exceptional handling in a package that’s surprisingly spacious and efficient.
Engine and Performance Excellence
At the heart of the Audi S4 Avant lies a 3.0-liter V6 turbodiesel engine producing 347 horsepower, enabling a 0-62mph sprint in just 4.9 seconds. This powertrain benefits from mild-hybrid technology, including a 48-volt system that sharpens throttle response and enhances overall drivability. The engine pulls strongly across a broad rev range, making it ideal for both spirited overtakes and relaxed cruising.
Paired with an eight-speed Tiptronic automatic transmission, power is smoothly distributed to all four wheels via the quattro system, which has been refined for better balance and agility. Reviewers note the chassis feels planted and secure, with huge grip in corners, though some wish for more playful dynamics compared to rivals like BMW’s M3 Touring.
Fuel efficiency is a strong suit for such performance, with official WLTP figures around 39.8mpg and CO2 emissions at 166g/km. Real-world tests show 35-42mpg depending on driving style, making it a cost-effective option for high-mileage users.
Design and Aerodynamics
Externally, the S4 Avant adopts a subtle, understated look that belies its capabilities. Sleek LED headlights, a bold grille, and discreet S badging maintain the A4 family’s elegant lines while adding sporty flair. The estate body style extends the roofline for practicality without compromising the coupe-like profile.
Wheel options range from 18 to 20 inches, shod in high-performance tires that enhance grip. The quattro system’s tweaks contribute to a lighter, stiffer chassis, improving handling precision on twisty roads.
Interior Comfort and Technology
Step inside, and the S4 Avant’s cabin impresses with premium materials, supportive sports seats, and ample space. Front seats offer extensive adjustments, heating, and ventilation, ensuring long-journey comfort. Rear passengers enjoy generous legroom and headroom, suitable for adults on extended trips.
The Virtual Cockpit digital instrument cluster is standard, displaying customizable info including detailed navigation maps. The infotainment system, while touchscreen-heavy, responds quickly and supports wireless Android Auto and Apple CarPlay. High-quality leather and carbon-fiber trim elevate the ambiance, though some find the glossy finishes prone to fingerprints.
| Feature | Details |
|---|---|
| Seating | Sports seats with massage function (optional) |
| Infotainment | 10.1-inch touchscreen, Virtual Cockpit |
| Climate | Tri-zone automatic |
| Audio | Bang & Olufsen premium sound (optional) |
Cargo Space and Versatility
Practicality defines the Avant body, with a 495-liter boot expanding to 1,495 liters with seats folded. The low load lip and 40/20/40 split-folding rear seats make it family-friendly. Roof rails and a power tailgate add convenience for bikes, luggage, or sports gear.
Compared to sedans, the estate offers superior volume without feeling bulky, threading easily through urban streets or B-roads.
Handling and Ride Dynamics
The S4 Avant’s suspension strikes a balance between sportiness and comfort, though it’s firm over rough surfaces at low speeds. Adaptive dampers (optional) allow mode adjustments from plush touring to taut dynamic settings. Steering is precise but lacks the feedback of some competitors.
On motorways, noise insulation is excellent, with only a refined diesel hum under acceleration. The quattro grip shines in wet or snowy conditions, as noted by owners in rural areas.
Running Costs and Ownership
Starting around £49,000, the S4 Avant undercuts pricier rivals like the RS6 while offering similar thrills. Insurance groups are reasonable for the segment, and the diesel’s efficiency keeps BIK taxes low for company car drivers. Maintenance follows Audi’s schedule, with strong residuals supporting used values.
- Pros: Blistering pace, spacious interior, quattro traction, good economy
- Cons: Firm ride, diesel noise, touchscreen reliance
Safety and Driver Assistance
Standard safety kit includes adaptive cruise control, lane-keeping assist, and automatic emergency braking. Euro NCAP rates the A4 platform highly, with strong crash scores. Pre-sense front and traffic sign recognition enhance highway safety.
Market Position and Rivals
The S4 Avant competes with the BMW M340i Touring, Mercedes C43 Estate, and Alfa Romeo Giulia Estate. It excels in refinement and space but trails in raw excitement. For diesel fans, it’s a top pick over petrol alternatives.
| Model | 0-62mph | MPG | Price (est.) |
|---|---|---|---|
| Audi S4 Avant | 4.9s | 39.8 | £49k |
| BMW M340i Touring | 4.5s | 34 | £55k |
| Mercedes C43 | 4.6s | 37 | £52k |
Long-Term Ownership Insights
Owners praise the S4 for daily drivability, with comfortable seats, reliable tech, and all-weather capability. Real-world MPG hovers at 33-40, with a 400-mile range. Minor gripes include fuel tank size and artificial engine sounds.
YouTube reviews after months of use highlight its role as a ‘dream daily’—fast, practical, and premium without drama.
FAQs
Is the Audi S4 Avant reliable?
Yes, it shares the robust A4 platform with low fault rates in surveys. Regular servicing keeps it trouble-free.
What’s the boot space like?
495-1,495 liters, outperforming most sports saloons.
Diesel or petrol for the S4 Avant?
Diesel offers better torque and economy; earlier petrol V6 was punchier but thirstier.
How does quattro handle in snow?
Exceptionally, providing confidence on slippery roads.
Is it fun to drive?
Grippy and quick, but more composed than playful.
In summary, the Audi S4 Avant redefines the performance estate, merging speed, space, and sophistication for discerning drivers.
References
- Audi S4 Avant estate review — Carbuyer. 2021-02-15. https://www.carbuyer.co.uk/audi/a4/s4-avant
- Audi S4 Avant Review 2026 — Carwow. 2026. https://www.carwow.co.uk/audi/s4-avant
- Used Audi S4 Avant (2016–2024) review — Evo. N/A. https://www.evo.co.uk/audi/s4/avant
- Audi S4 Avant review: a half-price RS6? — Top Gear. N/A. https://www.topgear.com/car-reviews/audi/s4-tdi-quattro-5dr-tiptronic/first-drive-0
- Audi S4 Avant B9 — PistonHeads. N/A. https://www.pistonheads.com/gassing/topic.asp?h=0&f=255&t=2099932

