The Audi RS4 Avant (B9) 2.9 TFSI quattro tiptronic, produced from 2017 to 2019, represents the fourth generation of Audi’s high-performance RS4 model. Positioned as the flagship variant of the B9 Avant lineup, it combined the practicality of a station wagon (estate) with exhilarating performance derived from a potent twin-turbocharged V6 engine and Audi’s renowned quattro all-wheel-drive system. This model was primarily aimed at the European market, where the demand for high-performance wagons remains strong, though limited examples were imported to North America through grey market channels. It sits at the top of the RS4 range, offering a more refined and convenient driving experience compared to the six-speed manual transmission option.
Technical Specifications
| Brand | Audi |
| Model | RS4 |
| Generation | RS4 Avant (B9) |
| Type (Engine) | 2.9 TFSI (450 Hp) quattro tiptronic |
| Start of production | 2017 |
| End of production | 2019 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 11.5-11.6 l/100 km (20.5 – 20.3 US mpg, 24.6 – 24.4 UK mpg, 8.7 – 8.6 km/l) |
| Fuel consumption (extra urban) | 7.2 l/100 km (32.7 US mpg, 39.2 UK mpg, 13.9 km/l) |
| Fuel consumption (combined) | 8.8 l/100 km (26.7 US mpg, 32.1 UK mpg, 11.4 km/l) |
| CO2 emissions | 199-200 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 4.1 sec |
| Acceleration 0 – 62 mph | 4.1 sec |
| Acceleration 0 – 60 mph | 3.9 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 3.8 kg/Hp, 262.4 Hp/tonne |
| Weight-to-torque ratio | 2.9 kg/Nm, 349.9 Nm/tonne |
| Power | 450 Hp @ 5700-6700 rpm |
| Power per litre | 155.5 Hp/l |
| Torque | 600 Nm @ 1900-5000 rpm (442.54 lb.-ft. @ 1900-5000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | DECA |
| Engine displacement | 2894 cm3 (176.6 cu. in.) |
| Number of cylinders | 6 |
| Engine configuration | V-engine |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | BiTurbo, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 7.6 l (8.03 US qt | 6.69 UK qt) |
| Coolant | 10 l (10.57 US qt | 8.8 UK qt) |
| Kerb Weight | 1715 kg (3780.93 lbs.) |
| Max. weight | 2305 kg (5081.66 lbs.) |
| Max load | 590 kg (1300.73 lbs.) |
| Trunk (boot) space – minimum | 505 l (17.83 cu. ft.) |
| Fuel tank capacity | 58 l (15.32 US gal | 12.76 UK gal) |
| Max. roof load | 90 kg (198.42 lbs.) |
| Permitted trailer load with brakes (8%) | 2100 kg (4629.71 lbs.) |
| Permitted trailer load with brakes (12%) | 1900 kg (4188.78 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 80 kg (176.37 lbs.) |
| Length | 4781 mm (188.23 in.) |
| Width | 1866 mm (73.46 in.) |
| Width including mirrors | 2022 mm (79.61 in.) |
| Height | 1404 mm (55.28 in.) |
| Wheelbase | 2826 mm (111.26 in.) |
| Front track | 1580 mm (62.2 in.) |
| Rear (Back) track | 1575 mm (62.01 in.) |
| Front overhang | 918 mm (36.14 in.) |
| Rear overhang | 1037 mm (40.83 in.) |
| Minimum turning circle | 11.7 m (38.39 ft.) |
| Drive wheel | All wheel drive (4×4) |
| Number of gears and type of gearbox | 8 gears, automatic transmission tiptronic |
| Front suspension | Independent multi-link suspension, Independent coil spring |
| Rear suspension | Independent multi-link suspension, Independent coil spring |
| Front brakes | Ventilated discs |
| Rear brakes | Ventilated discs |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 265/35 R19 |
| Wheel rims size | 9J x 19 |
Powertrain & Engine Architecture
The heart of the RS4 Avant (B9) 2.9 TFSI is the DECA engine, a 2.9-liter twin-turbocharged V6. This engine is a significant departure from the naturally aspirated V8 used in the previous B8 generation. The DECA engine utilizes a 90-degree V-angle, contributing to a smoother power delivery and reduced vibrations. It features direct fuel injection, a sophisticated valvetrain with dual overhead camshafts (DOHC), and utilizes a single-scroll turbocharger for each cylinder bank. The turbochargers are positioned within the V of the engine, resulting in a more compact design and improved responsiveness. The engine produces 450 horsepower at 5,700-6,700 rpm and a substantial 600 Nm (442.54 lb-ft) of torque available from 1,900 to 5,000 rpm. The eight-speed tiptronic automatic transmission is specifically tuned for quick and precise shifts, and features a torque converter lockup clutch for improved efficiency. Audi’s quattro all-wheel-drive system, with a mechanical center differential, distributes power between the front and rear axles, optimizing traction and stability.
Driving Characteristics
The 2.9 TFSI engine paired with the eight-speed tiptronic transmission delivers a remarkably smooth and potent driving experience. While not as raw or engaging as a manual transmission, the tiptronic offers incredibly quick shifts, especially in dynamic mode. The broad torque curve ensures strong acceleration in any gear, making overtaking effortless. The quattro all-wheel-drive system provides exceptional grip, particularly in adverse weather conditions. Compared to the six-speed manual version, the tiptronic prioritizes comfort and ease of use, making it a more suitable choice for daily driving. The gear ratios are optimized for both acceleration and fuel efficiency, though the RS4 Avant is not designed to be an economy car. The suspension is firm but well-damped, providing a good balance between performance and ride comfort.
Equipment & Trim Levels
The RS4 Avant (B9) 2.9 TFSI quattro tiptronic came generously equipped as standard. Interior features included sport seats upholstered in Nappa leather with diamond stitching, a flat-bottomed steering wheel, and brushed aluminum trim. Standard technology included Audi’s Virtual Cockpit, a fully digital instrument cluster, and a MMI infotainment system with navigation. Optional extras included carbon fiber trim, a Bang & Olufsen sound system, and adaptive cruise control. Exterior features included a distinctive RS honeycomb grille, enlarged air intakes, and a rear diffuser with oval exhaust outlets. The tiptronic models often included paddle shifters for manual gear selection.
Chassis & Braking
The RS4 Avant (B9) features a sophisticated chassis designed to handle the engine’s power. The suspension utilizes independent multi-link setups at both the front and rear, with coil springs and adjustable dampers. The standard brakes consist of ventilated discs all around, with large calipers providing ample stopping power. Optional carbon ceramic brakes were available for even greater performance. The steering is a rack-and-pinion system with electric power assistance, offering precise and responsive handling. The car’s weight distribution is nearly perfect, contributing to its balanced handling characteristics.
Market Reception & Comparison
The RS4 Avant (B9) 2.9 TFSI quattro tiptronic was widely praised by automotive critics for its performance, handling, and practicality. The new twin-turbo V6 engine was lauded for its power and responsiveness, while the tiptronic transmission was appreciated for its smoothness and convenience. Compared to the previous V8-powered RS4, the B9 model offered improved fuel economy and a wider torque band. Against competitors like the BMW M3 Touring and Mercedes-AMG C63 Estate, the RS4 Avant stood out for its all-weather capability thanks to the quattro system and its refined interior. Some critics noted that the exhaust note was not as evocative as the previous V8, but the overall driving experience was overwhelmingly positive.
Legacy
The DECA engine and the eight-speed tiptronic transmission have proven to be relatively reliable, although preventative maintenance is crucial. The turbochargers and fuel injectors are potential areas of concern, and regular oil changes are essential. The quattro all-wheel-drive system is generally robust, but the center differential may require servicing over time. On the used car market, the RS4 Avant (B9) 2.9 TFSI quattro tiptronic holds its value well, reflecting its performance and desirability. It remains a popular choice for enthusiasts seeking a high-performance wagon that can be used as a daily driver.
