This is rapidly moving to NOT airplane stuff....except I will talk about my SAAB 9-3, which was at least made by an airplane company!

Great turbo. Absolutely no lag. Great acceleration and a superb sport suspension. Everything a sport sedan made by an aircraft manufacturer should be. Never had a problem with the turbo. All good things come to an end and in 2017 I replaced it with a Ford Fusion. (Ford, at least, is a good friend of EAA and I therefore consider it tangentially airplane related.) The Ford Ecoboost pales in comparison to the Scania engine, with a half second or a second lag. very disconcerting. The ability to paddle shift makes up for that somewhat, but requires some getting used to. For raw power, however,... I learned to drive in my grandfather's 1963 Buick Wildcat with a 435 cubic inch engine. Push on the accelerator and you could immediately feel the G increase...as you watched the fuel gauge sink. So...when the oil crisis hit we traded it in for a Beetle. That Beetle is still my all time favorite car. (Many EAB aircraft use VW engines, so I will claim an airplane relationship here, too.)