The Audi A5 Cabriolet 40 TDI (190 hp) S tronic, produced from December 2019 through 2020, represents a compelling blend of open-air motoring and efficient diesel performance within the fifth-generation (F5) A5 lineup. This variant, introduced with the facelift of the F5 generation, aimed to provide a more economical and refined experience compared to its petrol-powered siblings, while still delivering a respectable level of performance. Positioned as a mid-range offering, it catered to buyers seeking a balance between driving enjoyment and fuel efficiency in a stylish convertible package. The 40 TDI utilized Audi’s established 2.0-liter turbocharged diesel engine paired with the quick-shifting S tronic dual-clutch transmission, making it a popular choice in European markets.
Technical Specifications
| Brand | Audi |
| Model | A5 |
| Generation | A5 Cabriolet (F5, facelift 2019) |
| Type (Engine) | 40 TDI (190 Hp) S tronic |
| Start of production | December, 2019 |
| End of production | 2020 |
| Powertrain Architecture | Internal Combustion engine |
| Body type | Cabriolet |
| Seats | 4 |
| Doors | 2 |
| Fuel consumption (urban) | 5.2-5.4 l/100 km (45.2 – 43.6 US mpg, 54.3 – 52.3 UK mpg, 19.2 – 18.5 km/l) |
| Fuel consumption (extra urban) | 4.1-4.6 l/100 km (57.4 – 51.1 US mpg, 68.9 – 61.4 UK mpg, 24.4 – 21.7 km/l) |
| Fuel consumption (combined) | 4.5-4.9 l/100 km (52.3 – 48 US mpg, 62.8 – 57.6 UK mpg, 22.2 – 20.4 km/l) |
| CO2 emissions | 118-128 g/km |
| Fuel Type | Diesel |
| Acceleration 0 – 100 km/h | 8.4 sec |
| Acceleration 0 – 62 mph | 8.4 sec |
| Acceleration 0 – 60 mph | 8 sec (Calculated) |
| Maximum speed | 241 km/h (149.75 mph) |
| Emission standard | Euro 6d-TEMP-EVAP-ISC |
| Weight-to-power ratio | 8.9 kg/Hp, 112.4 Hp/tonne |
| Weight-to-torque ratio | 4.2 kg/Nm, 236.7 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, DESA |
| 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 | OHC |
| Engine oil capacity | 4.7 l (4.97 US qt | 4.14 UK qt) |
| Coolant capacity | 12.2 l (12.89 US qt | 10.73 UK qt) |
| Kerb Weight | 1690 kg (3725.81 lbs.) |
| Max. weight | 2215 kg (4883.24 lbs.) |
| Max load | 525 kg (1157.43 lbs.) |
| Trunk (boot) space – minimum | 380 l (13.42 cu. ft.) |
| Fuel tank capacity | 40 l (10.57 US gal | 8.8 UK gal) |
| AdBlue tank capacity | 12 l (3.17 US gal | 2.64 UK gal) |
| 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 | 4697 mm (184.92 in.) |
| Width | 1846 mm (72.68 in.) |
| Width including mirrors | 2029 mm (79.88 in.) |
| Height | 1384 mm (54.49 in.) |
| Wheelbase | 2764 mm (108.82 in.) |
| Front track | 1587 mm (62.48 in.) |
| Rear track | 1568 mm (61.73 in.) |
| Front overhang | 898 mm (35.35 in.) |
| Rear overhang | 1035 mm (40.75 in.) |
| Drag coefficient (Cd) | 0.28 |
| Minimum turning circle | 11.5 m (37.73 ft.) |
| Drivetrain Architecture | 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 spring suspension with stabilizer |
| Front brakes | Ventilated discs |
| Rear brakes | Disc |
| Assisting systems | ABS (Anti-lock braking system) |
| Steering type | Steering rack and pinion |
| Power steering | Electric Steering |
| Tires size | 225/50 R17 94 Y |
| Wheel rims size | 7.5J x 17 |
Powertrain & Engine Architecture
The heart of the A5 Cabriolet 40 TDI is Audi’s 2.0-liter four-cylinder diesel engine, specifically the DETA or DESA engine code depending on the exact production date and market. This engine is a member of the Volkswagen Group’s modular engine family, known for its compact dimensions and efficiency. It features a cast iron block, aluminum cylinder head, and a single turbocharger with an intercooler to boost power and torque. The engine utilizes a common rail direct injection system, delivering fuel at extremely high pressures for optimized combustion. The valvetrain employs an overhead camshaft (OHC) configuration with four valves per cylinder. The S tronic 7-speed dual-clutch transmission is a key component, offering rapid and smooth gear changes. This transmission features two separate clutches, one for odd gears and one for even gears, allowing for pre-selection of the next gear and minimizing interruption in power delivery.
Driving Characteristics
The 190 hp and 400 Nm (295 lb-ft) of torque provided by the 40 TDI powertrain deliver a comfortable and capable driving experience. While not as overtly sporty as higher-powered A5 variants, the 40 TDI offers ample power for everyday driving and highway cruising. Acceleration from 0-100 km/h (0-62 mph) takes approximately 8.4 seconds. The S tronic transmission contributes to a responsive feel, and the engine provides a broad torque band, making overtaking maneuvers relatively effortless. Compared to the manual transmission options available on other A5 models, the S tronic prioritizes convenience and ease of use, though some enthusiasts might miss the direct engagement of a manual gearbox. The gear ratios are tuned for a balance between fuel efficiency and performance, with taller gears for relaxed cruising and shorter gears for quicker acceleration.
Equipment & Trim Levels
The A5 Cabriolet 40 TDI typically came equipped with a generous level of standard features. These included Audi’s MMI infotainment system with a 7-inch display (upgradeable to a larger screen), automatic climate control, leather upholstery, and a power-operated soft top. Standard safety features included ABS, electronic stability control, and multiple airbags. Optional extras included features like Audi’s Virtual Cockpit digital instrument cluster, a premium sound system, and advanced driver-assistance systems such as adaptive cruise control and lane departure warning. Trim levels varied by market, but generally offered options for upgraded interior materials, exterior styling enhancements, and additional comfort features.
Chassis & Braking
The A5 Cabriolet features a sophisticated chassis designed to provide a comfortable ride and precise handling. The front suspension utilizes an independent multi-link setup, while the rear suspension also employs a multi-link design with a stabilizer bar. This configuration helps to minimize body roll and provide a stable platform for cornering. The braking system consists of ventilated discs at the front and solid discs at the rear, providing adequate stopping power for the vehicle’s weight and performance. ABS (Anti-lock Braking System) is standard, enhancing safety during emergency braking situations.
Market Reception & Comparison
The A5 Cabriolet 40 TDI was generally well-received by automotive critics, who praised its fuel efficiency, comfortable ride, and refined interior. It offered a compelling alternative to petrol-powered convertibles, particularly for drivers who prioritize economy. Compared to the more powerful A5 45 TFSI, the 40 TDI sacrificed some outright performance but gained significant advantages in fuel consumption. Against competitors like the BMW 4 Series Convertible and Mercedes-Benz C-Class Cabriolet, the A5 40 TDI held its own in terms of refinement and technology, offering a strong value proposition.
Legacy
The 2.0-liter TDI engine and S tronic transmission combination used in the A5 Cabriolet 40 TDI have proven to be relatively reliable powertrains. While diesel engines can be susceptible to issues with the diesel particulate filter (DPF) if not driven on longer journeys regularly, the Audi’s engine has generally demonstrated good durability. On the used car market, these models represent a good balance of price and features, offering a stylish and comfortable convertible experience at a reasonable cost. The A5 Cabriolet 40 TDI remains a popular choice for buyers seeking a refined and economical open-top car.
