Audi has just introduced an advanced diesel V-8 engine complete with electric compressor technology in its SQ7 TDI performance SUV.

But the engine, which will also have a gasoline counterpart, may end up being the automaker’s last V-8.

The information was revealed to Autocar by a source at Audi.

The source explained that the Volkswagen Group’s focus on vehicle electrification means most powertrain investments will be spent in the area of electric motors and batteries.

2017 Audi SQ7 TDI

2017 Audi SQ7 TDI

“It would be very difficult to justify the huge investment in another new V-8 because of the cost of developing electric drivetrains and battery packs,” the source said. “You have to ask what is the best use of investment money.”

The VW Group is committed to having at least 25 percent of its sales being electric cars by 2025, and according to the source Audi is targeting an even higher percentage.

Couple this increased focus on electric cars with stricter vehicle emissions regulations and it’s easy to see why car companies such as Audi will want to move away from big engines. We’ve even heard Fiat Chrysler Automobiles [NYSE:FCAU] plans to phase out V-8s in its performance offerings.

Electric car technology should continue to improve to the point where it offers superior performance to internal combustion engines. But it will be a sad day when you no longer get to hear the roar of a V-8.