The Audi A4 Avant 40 TFSI Mild Hybrid S tronic, produced from 2019 to 2020, represents a significant iteration of the B9 (8W) generation A4 Avant. Positioned as a mid-range offering within the A4 lineup, this variant combined a 2.0-liter turbocharged four-cylinder engine with a 48-volt mild hybrid system and Audi’s seven-speed S tronic dual-clutch transmission. It aimed to balance performance, fuel efficiency, and practicality for the European market, where the A4 Avant is a popular choice for families and business users. This model was part of the facelifted B9 range, incorporating styling updates and revised technology compared to earlier B9 models.
Technical Specifications
| Brand | Audi |
| Model | A4 |
| Generation | A4 Avant (B9 8W, facelift 2019) |
| Type (Engine) | 40 TFSI (190 Hp) Mild Hybrid S tronic |
| Start of production | 2019 |
| End of production | 2020 |
| Powertrain Architecture | MHEV (Mild Hybrid Electric Vehicle) |
| Body type | Station wagon (estate) |
| Seats | 5 |
| Doors | 5 |
| Combined fuel consumption (WLTP) | 6.8-7.4 l/100 km (34.6 – 31.8 US mpg, 41.5 – 38.2 UK mpg, 14.7 – 13.5 km/l) |
| CO2 emissions (WLTP) | 155-170 g/km |
| Fuel consumption (urban) | 7.4-7.6 l/100 km (31.8 – 30.9 US mpg, 38.2 – 37.2 UK mpg, 13.5 – 13.2 km/l) |
| Fuel consumption (extra urban) | 4.9-5.3 l/100 km (48 – 44.4 US mpg, 57.6 – 53.3 UK mpg, 20.4 – 18.9 km/l) |
| Fuel consumption (combined) | 5.9-6.1 l/100 km (39.9 – 38.6 US mpg, 47.9 – 46.3 UK mpg, 16.9 – 16.4 km/l) |
| CO2 emissions | 134-138 g/km |
| Fuel Type | Petrol (Gasoline) |
| Acceleration 0 – 100 km/h | 7.5 sec |
| Acceleration 0 – 62 mph | 7.5 sec |
| Acceleration 0 – 60 mph | 7.1 sec |
| Maximum speed | 238 km/h (147.89 mph) |
| Emission standard | Euro 6d – TEMP – EVAP – ISC |
| Weight-to-power ratio | 7.9 kg/Hp, 125.8 Hp/tonne |
| Weight-to-torque ratio | 4.7 kg/Nm, 211.9 Nm/tonne |
| Power | 190 Hp @ 4200-6000 rpm |
| Power per litre | 95.8 Hp/l |
| Torque | 320 Nm @ 1450-4200 rpm (236.02 lb.-ft. @ 1450-4200 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | DKYA, DLVA |
| 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 | 1510 kg (3328.98 lbs.) |
| Max. weight | 2115 kg (4662.78 lbs.) |
| Max load | 605 kg (1333.8 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%) | 1700 kg (3747.86 lbs.) |
| Permitted trailer load with brakes (12%) | 1500 kg (3306.93 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 80 kg (176.37 lbs.) |
| Length | 4762 mm (187.48 in.) |
| Width | 1847 mm (72.72 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 track | 1555 mm (61.22 in.) |
| Front overhang | 899 mm (35.39 in.) |
| Rear overhang | 1043 mm (41.06 in.) |
| Minimum turning circle | 11.6 m (38.06 ft.) |
| Drivetrain Architecture | ICE and electric motor drive the front wheels |
| Drive wheel | Front wheel drive |
| Number of gears | 7 |
| Gearbox type | Automatic transmission S tronic |
| Front suspension | Independent multi-link suspension |
| Rear suspension | Independent multi-link suspension |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
Powertrain & Engine Architecture
The heart of the A4 Avant 40 TFSI is the EA888 2.0-liter inline-four cylinder gasoline engine. Specifically, engine codes DKYA and DLVA were commonly found in this variant. This engine utilizes direct fuel injection and a single turbocharger with an intercooler to deliver a balance of power and efficiency. The mild hybrid system, a 48V setup, incorporates a belt starter generator (BSG) and a small lithium-ion battery. The BSG allows for extended engine-off coasting, regenerative braking to recoup energy, and a smoother start-stop system. The S tronic seven-speed dual-clutch transmission provides quick and efficient gear changes, contributing to both performance and fuel economy. This transmission is known for its responsiveness and ability to seamlessly shift between gears, enhancing the driving experience.
Driving Characteristics
The 190 horsepower and 320 Nm (236 lb-ft) of torque, combined with the S tronic transmission, provide brisk acceleration. The 0-60 mph sprint takes approximately 7.1 seconds, and the car reaches a top speed of 147.89 mph. While not as overtly sporty as higher-powered A4 variants, the 40 TFSI offers ample power for everyday driving and overtaking maneuvers. The S tronic transmission’s quick shifts and well-chosen gear ratios ensure the engine remains in its optimal power band. Compared to the manual transmission versions, the S tronic provides a more effortless driving experience, particularly in urban traffic. It doesn’t quite match the responsiveness of the more powerful 45 TFSI models, but offers a noticeable improvement in fuel economy.
Equipment & Trim Levels
The A4 Avant 40 TFSI typically came standard with features like Audi’s MMI infotainment system with a 7-inch touchscreen display, three-zone automatic climate control, and a leather-wrapped steering wheel. Standard safety equipment included Audi pre sense basic, lane departure warning, and automatic emergency braking. Optional extras included Audi virtual cockpit (a fully digital instrument cluster), a larger touchscreen display, navigation system, and a premium sound system. Interior upholstery was typically cloth, with leather options available as an upgrade. Trim levels varied by market, but generally offered packages that added features like heated seats, parking sensors, and advanced driver-assistance systems.
Chassis & Braking
The A4 Avant features a sophisticated suspension system designed to balance comfort and handling. The front suspension utilizes MacPherson struts, while the rear employs a multi-link setup. This configuration provides a comfortable ride while maintaining good control in corners. The 40 TFSI variant typically came equipped with ventilated front disc brakes and solid rear disc brakes. ABS (Anti-lock Braking System) and electronic stability control are standard features, enhancing safety and stability. The suspension tuning is generally geared towards comfort, making it a pleasant long-distance cruiser.
Market Reception & Comparison
The A4 Avant 40 TFSI Mild Hybrid S tronic was generally well-received by automotive critics. It was praised for its fuel efficiency, comfortable ride, and refined interior. However, some reviewers noted that the engine could feel slightly strained when pushed hard, and that the steering lacked some feedback. Compared to the 45 TFSI, the 40 TFSI offered a more affordable entry point into the A4 Avant range, with a noticeable improvement in fuel economy. The diesel-powered TDI variants offered even better fuel economy, but at the expense of refinement and performance.
Legacy
The EA888 engine family, including the 2.0-liter TFSI used in the A4 Avant 40 TFSI, has proven to be relatively reliable, although preventative maintenance is crucial. Common issues include carbon buildup on the intake valves, which can affect performance over time. The S tronic transmission is generally durable, but requires regular servicing to ensure smooth operation. In the used car market, the A4 Avant 40 TFSI represents a good value proposition, offering a blend of practicality, comfort, and efficiency. Its mild hybrid technology adds a degree of future-proofing, and the car’s overall build quality ensures it remains a desirable option for buyers seeking a premium estate car.
