The Audi A4 (B9 8W) 2.0 TDI ultra 190 hp S tronic represents a significant iteration within the fifth generation of Audi’s popular A4 model line. Produced from 2015 to 2018, this variant was positioned as a fuel-efficient, performance-oriented option within the broader A4 range, appealing to buyers seeking a balance between economy and driving enjoyment. It was primarily marketed in Europe and other regions where diesel engines held significant market share, offering a sophisticated and technologically advanced package in the compact executive car segment. The “ultra” designation signified Audi’s efforts to maximize efficiency through weight reduction and optimized engine tuning.
Technical Specifications
| Brand | Audi |
| Model | A4 |
| Generation | A4 (B9 8W) |
| Type (Engine) | 2.0 TDI ultra (190 Hp) S tronic |
| Start of production | 2015 |
| End of production | 2018 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Sedan |
| Seats | 5 |
| Doors | 4 |
| Fuel consumption (urban) | 4.6-4.7 l/100 km (51.1 – 50 US mpg, 61.4 – 60.1 UK mpg, 21.7 – 21.3 km/l) |
| Fuel consumption (extra urban) | 3.4-3.5 l/100 km (69.2 – 67.2 US mpg, 83.1 – 80.7 UK mpg, 29.4 – 28.6 km/l) |
| Fuel consumption (combined) | 3.9-4.0 l/100 km (60.3 – 58.8 US mpg, 72.4 – 70.6 UK mpg, 25.6 – 25 km/l) |
| CO2 emissions | 101-103 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 7.7 sec |
| Acceleration 0 – 62 mph | 7.7 sec |
| Acceleration 0 – 60 mph | 7.3 sec |
| Maximum speed | 240 km/h (149.13 mph) |
| Emission standard | Euro 6 |
| Weight-to-power ratio | 7.7 kg/Hp, 129.3 Hp/tonne |
| Weight-to-torque ratio | 3.7 kg/Nm, 272.1 Nm/tonne |
| Power | 190 Hp @ 3800-4200 rpm |
| Torque | 400 Nm @ 1750-3000 rpm (295.02 lb.-ft. @ 1750-3000 rpm) |
| Engine layout | Front, Longitudinal |
| Engine Model/Code | DETA |
| Engine displacement | 1968 cm3 (120.09 cu. in.) |
| Number of cylinders | 4 |
| Engine configuration | Inline |
| Cylinder Bore | 81 mm (3.19 in.) |
| Piston Stroke | 95.5 mm (3.76 in.) |
| Compression ratio | 15.5:1 |
| Number of valves per cylinder | 4 |
| Fuel injection system | Diesel Commonrail |
| Engine aspiration | Turbocharger, Intercooler |
| Valvetrain | DOHC |
| Engine oil capacity | 4.7 l (4.97 US qt | 4.14 UK qt) |
| Kerb Weight | 1470 kg (3240.8 lbs.) |
| Max. weight | 2070 kg (4563.57 lbs.) |
| Max load | 600 kg (1322.77 lbs.) |
| Trunk (boot) space – minimum | 480 l (16.95 cu. ft.) |
| Trunk (boot) space – maximum | 965 l (34.08 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%) | 1600 kg (3527.4 lbs.) |
| Permitted trailer load with brakes (12%) | 1400 kg (3086.47 lbs.) |
| Permitted trailer load without brakes | 750 kg (1653.47 lbs.) |
| Permitted towbar download | 80 kg (176.37 lbs.) |
| Length | 4726 mm (186.06 in.) |
| Width | 1842 mm (72.52 in.) |
| Width including mirrors | 2022 mm (79.61 in.) |
| Height | 1427 mm (56.18 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 | 1026 mm (40.39 in.) |
| Drag coefficient (Cd) | 0.27 |
| Minimum turning circle (turning diameter) | 11.6 m (38.06 ft.) |
| 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; 245/40 R18; 245/35 R19 |
| Wheel rims size | 7.5J x 17; 18; 19 |
Powertrain & Engine Architecture
The heart of the A4 2.0 TDI ultra is the DETA engine, a 2.0-liter inline-four cylinder diesel engine. This engine is a member of the Volkswagen Group’s modular engine family, known for its compact dimensions and efficiency. The DETA 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 features a dual overhead camshaft (DOHC) valvetrain with four valves per cylinder, enhancing breathing and overall performance. The S tronic transmission is a seven-speed dual-clutch transmission (DCT) known for its rapid and smooth gear changes. This transmission contributes significantly to the car’s efficiency and responsiveness.
Driving Characteristics
The 190 hp output and 400 Nm (295 lb-ft) of torque, combined with the S tronic transmission, provide brisk acceleration. The 0-60 mph sprint takes approximately 7.3 seconds, and the car reaches a top speed of 149 mph. While not as overtly sporty as higher-powered A4 variants, the 2.0 TDI ultra offers ample power for everyday driving and confident overtaking. The S tronic transmission’s quick shifts and well-chosen gear ratios ensure that the engine remains in its optimal power band. Compared to the manual transmission versions, the S tronic provides a more seamless and effortless driving experience. It also delivers slightly improved fuel economy due to the transmission’s efficiency. Compared to the more powerful 2.0 TDI variants (e.g., those producing 190 hp), the ultra model prioritizes efficiency over outright performance.
Equipment & Trim Levels
The A4 2.0 TDI ultra typically came well-equipped as standard. Features included Audi’s MMI infotainment system with a central display screen, automatic climate control, power windows and mirrors, and alloy wheels. Interior upholstery was typically cloth, with leather options available as an upgrade. Common optional extras included a sunroof, navigation system, parking sensors, and advanced driver-assistance systems like adaptive cruise control and lane departure warning. Trim levels varied by market, but generally, the “ultra” designation indicated a focus on efficiency and a slightly more restrained aesthetic compared to higher-spec trims like the “Sport” or “S line”.
Chassis & Braking
The A4 B9 utilizes a sophisticated chassis design featuring independent multi-link suspension at both the front and rear. This suspension setup provides a comfortable ride while maintaining good handling characteristics. The 2.0 TDI ultra variant typically featured ventilated disc brakes on all four wheels, providing ample stopping power. Anti-lock braking system (ABS) and electronic stability control (ESC) were standard safety features. The suspension tuning was generally geared towards comfort and refinement, although the car remained composed and predictable in corners. Weight distribution was well-balanced, contributing to the car’s overall stability.
Market Reception & Comparison
The Audi A4 2.0 TDI ultra 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, while capable, lacked the outright punch of higher-powered A4 variants. Compared to other trims in the A4 lineup, the 2.0 TDI ultra offered a compelling value proposition for buyers prioritizing economy and practicality. It competed directly with other diesel-powered compact executive cars from brands like BMW, Mercedes-Benz, and Volkswagen. In terms of fuel economy, the 2.0 TDI ultra consistently outperformed its gasoline-powered counterparts.
Legacy
The DETA engine, while generally reliable, is known to require regular maintenance, particularly regarding the diesel particulate filter (DPF) and turbocharger. Proper servicing and the use of high-quality oil are crucial for long-term durability. The S tronic transmission is also relatively reliable but can be expensive to repair if issues arise. Today, the A4 B9 2.0 TDI ultra remains a popular choice in the used car market, particularly for those seeking a fuel-efficient and well-equipped compact executive car. Its reputation for reliability and refinement, combined with its relatively affordable price point, ensures its continued appeal.
