The Audi A4 (B9 8W) 30 TDI S tronic, produced from May 2019 to August 2020, represents a key variant within the facelifted fourth generation of Audi’s popular executive sedan. Positioned as a fuel-efficient and accessible entry point into the A4 range, this model combined a 2.0-liter turbocharged diesel engine with Audi’s renowned seven-speed S tronic dual-clutch transmission. It was primarily aimed at European markets where diesel engines remained highly favored for their economy and torque, offering a balance between performance and running costs. This variant played a significant role in maintaining the A4’s competitiveness in a segment increasingly focused on efficiency and reduced emissions.
Technical Specifications
| Brand | Audi |
| Model | A4 |
| Generation | A4 (B9 8W, facelift 2019) |
| Type (Engine) | 30 TDI (136 Hp) S tronic |
| Start of production | May, 2019 |
| End of production | August, 2020 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Combined fuel consumption (WLTP) | 5.0-5.6 l/100 km (47 – 42 US mpg, 56.5 – 50.4 UK mpg, 20 – 17.9 km/l) |
| CO2 emissions (WLTP) | 134-148 g/km |
| Fuel consumption (urban) | 4.4-4.7 l/100 km (53.5 – 50 US mpg, 64.2 – 60.1 UK mpg, 22.7 – 21.3 km/l) |
| Fuel consumption (extra urban) | 3.6-4.0 l/100 km (65.3 – 58.8 US mpg, 78.5 – 70.6 UK mpg, 27.8 – 25 km/l) |
| Fuel consumption (combined) | 3.9-4.3 l/100 km (60.3 – 54.7 US mpg, 72.4 – 65.7 UK mpg, 25.6 – 23.3 km/l) |
| CO2 emissions | 102-112 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 9.5 sec |
| Acceleration 0 – 62 mph | 9.5 sec |
| Acceleration 0 – 60 mph | 9 sec |
| Maximum speed | 214 km/h (132.97 mph) |
| Emission standard | Euro 6d – TEMP – EVAP – ISC |
| Weight-to-power ratio | 11 kg/Hp, 91.3 Hp/tonne |
| Weight-to-torque ratio | 4.7 kg/Nm, 214.8 Nm/tonne |
| Power | 136 Hp @ 3000-4400 rpm |
| Power per litre | 69.1 Hp/l |
| Torque | 320 Nm @ 1500-2750 rpm (236.02 lb.-ft. @ 1500-2750 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | DEZB |
| Engine displacement | 1968 cm3 (120.09 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Engine oil capacity | 5.5 l (5.81 US qt | 4.84 UK qt) |
| Kerb Weight | 1490 kg (3284.89 lbs.) |
| Max. weight | 2090 kg (4607.66 lbs.) |
| Max load | 600 kg (1322.77 lbs.) |
| Fuel tank capacity | 40 l (10.57 US gal | 8.8 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 | 1428 mm (56.22 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 | 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 |
INTRODUCTION
The Audi A4 B9.5 30 TDI S tronic, launched in 2019 as part of the A4’s mid-life facelift, offered a compelling package for buyers seeking a refined and economical executive car. Built on the Volkswagen Group’s MLB Evo platform (1HX0/A3), this variant slotted into the lower-mid range of the A4 lineup, positioned above the entry-level models and below the more powerful 40 TDI and petrol-powered options. The “30 TDI” designation signified Audi’s internal power banding, indicating a diesel engine producing between 110 and 130 kW (approximately 148-174 hp), though in this case, output was 136 hp. The S tronic transmission was a key feature, providing quick and smooth gear changes compared to a traditional manual gearbox.
Powertrain & Engine Architecture
At the heart of the A4 30 TDI S tronic lies the Volkswagen Group’s DEZB engine, a 2.0-liter inline-four cylinder diesel. This engine utilizes a common rail direct injection system, delivering fuel at extremely high pressures for optimized combustion. A single turbocharger with an intercooler provides forced induction, boosting power and torque. The engine also incorporates advanced technologies like variable valve timing and exhaust gas recirculation (EGR) to meet stringent Euro 6d emission standards. The S tronic transmission is a seven-speed dual-clutch unit, offering both fully automatic operation and the ability for the driver to manually shift gears via steering wheel-mounted paddles or the gear selector. This transmission is known for its rapid shifts and efficiency, contributing to the car’s overall fuel economy. The engine’s longitudinal mounting allows for front-wheel drive configuration in this specific variant.
Driving Characteristics
The 136 hp and 320 Nm (236 lb-ft) of torque delivered by the 30 TDI engine provide adequate performance for everyday driving. Acceleration from 0-60 mph takes around 9 seconds, and the car feels responsive in most situations. However, it’s not a particularly sporty variant; the focus is on smooth, effortless cruising and fuel efficiency. The S tronic transmission contributes to a refined driving experience, with seamless gear changes and a lack of noticeable torque interruption. Compared to the more powerful 40 TDI, the 30 TDI feels less urgent, especially during overtaking maneuvers. The gear ratios are tuned for economy, meaning the engine doesn’t rev as freely as in higher-output versions. The front-wheel drive configuration provides good traction in most conditions, but can exhibit some torque steer under hard acceleration.
Equipment & Trim Levels
The A4 30 TDI S tronic typically came well-equipped, even in base trim. Standard features included Audi’s MMI infotainment system with a 7-inch touchscreen display, Bluetooth connectivity, automatic climate control, and a leather-wrapped steering wheel. Safety features such as ABS, electronic stability control, and multiple airbags were also standard. Higher trim levels, such as Sport and S line, added features like larger alloy wheels, sport seats, LED headlights, and a more aggressive exterior styling package. Optional extras included a virtual cockpit digital instrument cluster, a premium sound system, and advanced driver-assistance systems like adaptive cruise control and lane keep assist.
Chassis & Braking
The A4 B9.5 utilizes a sophisticated suspension setup, featuring independent multi-link suspension at both the front and rear axles. This provides a comfortable ride quality and good handling characteristics. The 30 TDI variant, being lighter than some of the higher-powered models, generally feels well-balanced. Braking duties are handled by ventilated discs at the front and solid discs at the rear. ABS and electronic stability control are standard, providing excellent stopping power and control. The steering is precise and well-weighted, offering a good level of feedback to the driver.
Market Reception & Comparison
The A4 30 TDI 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 lacked the outright performance of its more powerful siblings. Compared to the A4 40 TDI, the 30 TDI offered lower running costs but sacrificed some performance. Against competitors like the BMW 320d and Mercedes-Benz C220d, the A4 30 TDI S tronic held its own in terms of refinement and technology, but often lagged slightly in terms of driving dynamics. Its fuel economy figures were competitive within its class, and its reliability proved to be generally good.
Legacy
The Audi A4 B9.5 30 TDI S tronic has established itself as a reliable and economical used car option. The 2.0-liter diesel engine, while subject to scrutiny regarding diesel emissions in recent years, has proven to be durable when properly maintained. The S tronic transmission, while requiring regular servicing, is generally robust. These cars represent a good value proposition for buyers seeking a comfortable and efficient executive sedan. However, potential buyers should be aware of the potential for diesel particulate filter (DPF) issues, particularly if the car has been primarily used for short journeys. Overall, the A4 30 TDI S tronic remains a popular choice in the used car market, offering a blend of practicality, refinement, and economy.
