The Audi A4 Avant 45 TFSI S tronic, produced from 2019, represents a significant iteration of the B9 (8W) generation A4 Avant, following the facelift introduced in 2018. This variant occupies a strong position in the A4 lineup, offering a balance of performance, technology, and practicality aimed at buyers seeking a premium wagon experience. It builds upon the established reputation of the A4 Avant as a versatile and refined vehicle, appealing to families and individuals alike. The “45 TFSI” designation signifies a 2.0-liter turbocharged four-cylinder engine producing 245 horsepower, paired with Audi’s renowned seven-speed S tronic dual-clutch transmission.
Technical Specifications
| Brand | Audi |
| Model | A4 |
| Generation | A4 Avant (B9 8W, facelift 2018) |
| Type (Engine) | 45 TFSI (245 Hp) S tronic |
| Start of production | 2019 |
| End of production | 2019 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Fuel consumption (urban) | 8.3-8.4 l/100 km (28.3 – 28 US mpg, 34 – 33.6 UK mpg, 12 – 11.9 km/l) |
| Fuel consumption (extra urban) | 5.3-5.7 l/100 km (44.4 – 41.3 US mpg, 53.3 – 49.6 UK mpg, 18.9 – 17.5 km/l) |
| Fuel consumption (combined) | 6.4-6.7 l/100 km (36.8 – 35.1 US mpg, 44.1 – 42.2 UK mpg, 15.6 – 14.9 km/l) |
| CO2 emissions | 145-151 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 6.5 sec |
| Acceleration 0 – 62 mph | 6.5 sec |
| Acceleration 0 – 60 mph | 6.2 sec |
| Maximum speed | 250 km/h (155.34 mph) |
| Emission standard | Euro 6d – TEMP |
| Weight-to-power ratio | 6.2 kg/Hp, 160.7 Hp/tonne |
| Weight-to-torque ratio | 4.1 kg/Nm, 242.6 Nm/tonne |
| Power | 245 Hp @ 5000-6500 rpm |
| Power per litre | 123.5 Hp/l |
| Torque | 370 Nm @ 1600-4300 rpm (272.9 lb.-ft. @ 1600-4300 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | DKNA |
| Engine displacement | 1984 cm3 (121.07 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Number of valves per cylinder | 4 |
| Fuel injection system | Direct injection |
| Engine aspiration | Turbocharger, Intercooler |
| Engine oil capacity | 5.2 l (5.49 US qt | 4.58 UK qt) |
| Kerb Weight | 1525 kg (3362.05 lbs.) |
| Max. weight | 2120 kg (4673.8 lbs.) |
| Max load | 595 kg (1311.75 lbs.) |
| Trunk (boot) space – minimum | 495 l (17.48 cu. ft.) |
| Fuel tank capacity | 54 l (14.27 US gal | 11.88 UK gal) |
| Max. roof load | 90 kg (198.42 lbs.) |
| Permitted trailer load with brakes (8%) | 1900 kg (4188.78 lbs.) |
| Permitted trailer load with brakes (12%) | 1700 kg (3747.86 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 80 kg (176.37 lbs.) |
| Length | 4738 mm (186.54 in.) |
| Width | 1842 mm (72.52 in.) |
| Width including mirrors | 2022 mm (79.61 in.) |
| Height | 1435 mm (56.5 in.) |
| Wheelbase | 2820 mm (111.02 in.) |
| Front track | 1572 mm (61.89 in.) |
| Rear (Back) track | 1555 mm (61.22 in.) |
| Front overhang | 880 mm (34.65 in.) |
| Rear overhang | 1038 mm (40.87 in.) |
| Drivetrain Architecture | The Internal combustion engine (ICE) drives the front wheels of the vehicle. |
| Drive wheel | Front wheel drive |
| Number of gears and type of gearbox | 7 gears, automatic transmission S tronic |
| Front suspension | Independent multi-link suspension |
| Rear suspension | Independent multi-link suspension |
| 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 | 225/50 R17 |
| Wheel rims size | 7.5 J x 17 |
INTRODUCTION
The Audi A4 Avant 45 TFSI S tronic, launched in 2019 as part of the B9 generation’s facelift, represents a refined and capable offering in the premium compact wagon segment. The B9 A4 Avant, built on the Volkswagen Group’s MLB Evo platform (shared with models like the A5 and Q5), aimed to balance driving dynamics with practicality and technological advancement. The 45 TFSI variant, with its 245 horsepower engine and quick-shifting S tronic transmission, was positioned as a sweet spot in the lineup, offering more performance than the base engine options while remaining more accessible than the higher-performance S4. This model year saw updates to the exterior styling, infotainment system, and driver-assistance features, further enhancing the A4 Avant’s appeal.
Powertrain & Engine Architecture
At the heart of the 45 TFSI is the EA888 2.0-liter turbocharged four-cylinder engine, specifically the DKNA engine code. This engine utilizes direct fuel injection and an integrated exhaust manifold for improved thermal management and responsiveness. The turbocharger, an evolution of previous designs, provides strong boost across a wide RPM range. The engine’s valvetrain features dual overhead camshafts and four valves per cylinder, optimizing airflow for increased power and efficiency. The S tronic seven-speed dual-clutch transmission is a key component of this powertrain. It offers incredibly fast and smooth gear changes, contributing to both performance and fuel economy. Unlike a traditional automatic, the S tronic doesn’t have a torque converter, resulting in a more direct connection between the engine and the wheels. The transmission is programmed with a focus on both comfort and sportiness, adapting its shift points based on driving style.
Driving Characteristics
The A4 Avant 45 TFSI S tronic delivers a refined and engaging driving experience. The 245 horsepower and 272.9 lb.-ft. of torque provide ample power for everyday driving and confident overtaking maneuvers. The S tronic transmission contributes to brisk acceleration, with a 0-60 mph time of around 6.2 seconds. Compared to the base 2.0-liter engine, the 45 TFSI offers a noticeable increase in performance. While not as aggressively tuned as the S4, it provides a satisfying level of power for most drivers. The S tronic transmission’s quick shifts and intelligent programming help to keep the engine in its optimal power band. The gear ratios are well-chosen, providing both strong off-the-line acceleration and comfortable cruising at highway speeds. The steering is precise and well-weighted, offering good feedback to the driver. The suspension, tuned for a balance of comfort and handling, absorbs bumps and imperfections in the road while maintaining a stable and controlled feel.
Equipment & Trim Levels
The 45 TFSI S tronic typically came well-equipped as standard. Features included Audi’s MMI infotainment system with a 7-inch touchscreen display (later upgraded to 10.1-inch), Apple CarPlay and Android Auto integration, automatic climate control, leather upholstery, and a suite of driver-assistance systems such as lane departure warning and forward collision warning. Optional extras included a virtual cockpit digital instrument cluster, a premium sound system, navigation, and a panoramic sunroof. Trim levels varied slightly depending on the market, but generally included options like Premium, Premium Plus, and Prestige, with each step up adding more luxury features and technology.
Chassis & Braking
The A4 Avant’s chassis is designed to provide a comfortable yet engaging driving experience. The front suspension utilizes a five-link independent setup, while the rear features a multi-link design. This configuration helps to minimize body roll and maximize grip. The 45 TFSI model typically came equipped with ventilated disc brakes on all four wheels, providing ample stopping power. ABS (Anti-lock Braking System) is standard, along with electronic stability control. The suspension tuning is generally geared towards comfort, but it still provides a reasonably sporty feel. Stabilizer bars are used front and rear to further reduce body roll during cornering.
Market Reception & Comparison
The A4 Avant 45 TFSI S tronic was generally well-received by automotive critics. It was praised for its refined driving experience, powerful engine, and well-appointed interior. Compared to the base A4 Avant models, the 45 TFSI offered a significant performance upgrade. Against competitors like the BMW 3 Series Touring and Mercedes-Benz C-Class Estate, the A4 Avant was often seen as a strong contender, offering a compelling blend of luxury, performance, and practicality. Fuel economy was considered competitive for its class, with combined figures around 36.8 – 35.1 US mpg. Reliability reports generally indicated good overall reliability, although some owners have reported minor issues with the infotainment system.
Legacy
The EA888 engine family, including the DKNA variant found in the A4 Avant 45 TFSI, has proven to be a durable and reliable powertrain. With proper maintenance, these engines can provide many years of trouble-free service. The S tronic transmission, while requiring more specialized maintenance than a traditional automatic, is also generally considered reliable. On the used car market, the A4 Avant 45 TFSI S tronic remains a popular choice, offering a good balance of performance, features, and value. Its reputation for quality and refinement continues to attract buyers seeking a premium wagon experience.
