In countries outside of Europe, the models come with a 3.0 TFSI.

Less than a week after giving the S6 and S7 a diesel engine in Europe, Audi is now introducing a similar TDI version of the S5 on the Old Continent for fans of low-rpm torque. It’s available for the Coupe and Sportback body styles, with the press release omitting the Cabriolet variant. It doesn’t come as a surprise that the design has been carried over from the TFSI models, so we’re dealing with a couple of attractive sports cars.

Underneath the bonnet, the S5 duo shares a 3.0-litre TDI V6 engine also available in the SQ5. As a matter of fact, the models have an identical output of 342 bhp and an ample 516 pound-feet of torque. As a side note, the aforementioned S6 models have an extra seven ponies and the same amount of torque.

Gallery: 2020 Audi S5 Sportback TDI

The diesel engine features the now familiar electric-powered compressor (EPC) and mild hybrid technology paired with a 48-volt main electrical system. The necessary energy to feed the system comes from a lithium-ion 0.5-kWh battery installed underneath the boot, with the mild hybrid system helping the car reduce fuel consumption by as much as 0.4 litres / 100 km. Speaking of fuel economy, Audi says the cars sip only 6.2 litres / 100 km, which works out to 45.5 mpg-UK.

2020 Audi S5 Coupe TDI

Drive the car at speeds between 34.2 mph to 99.4 mph and the S5 will be able to coast for up to 40 seconds with the engine turned off entirely once you take your foot off the accelerator pedal.

When it comes to performance, the S5 Coupe fitted with the TDI engine completes the 0-62 mph sprint in 4.8 seconds whereas the S5 Sportback needs an extra tenth of a second due to its slightly higher weight. Both models come with an electronic top speed limiter that kicks in at 155 mph.

2020 Audi S5 Coupe TDI

Audi mentions the two S5 models will be sold in many markets outside Europe with the 3.0 TFSI V6 packing 348 bhp and 369 lb-ft. It lacks the diesel’s EPC and comes linked to the same Quattro all-wheel-drive system through an eight-speed automatic transmission.

The TDI-powered Audi S5 Coupe and S5 Sportback are scheduled to go on sale in Europe next month, however availability in the UK won't start until late 2019. Standard equipment includes LED headlights with dynamic turn signals, S sport suspension and Alcantara leather power-adjustable front sport seats.

Gallery: 2020 Audi S5 Coupe TDI

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The Audi S5 models now with a TDI engine

  • Powerful 3.0 TDI engine with 255 kW (347 hp and 700 Nm (516.3 lb-ft)
  • 48-volt mild hybrid technology and electric powered compressor
  • Ideal combination of efficiency and sportiness

For the first time ever, the Audi S5 (Combined fuel consumption for Coupé/Sportback in l/100 km: 6.2 (37.9 US mpg)*; Combined CO2 emissions in g/km: 163 – 161 g/km (262.3 – 259.1 g/mi)*) has a V6 diesel under the hood. The 3.0 TDI engine in the S5 Coupé and the S5 Sportback produces 255 kW (347 hp) and delivers up to 700 Nm (516.3 lb-ft) of torque to the crankshaft. An electric powered compressor provides for strong off-the-line performance; a mild hybrid system enhances efficiency. This combination of power, torque and efficiency makes the S5 unique in its segment.