Seat-Porsche.

When Seat introduced their Ibiza in 1985, they claimed the drivetrain was developed in collaboration with Porsche. This was supposed to generate interest in the car which, to be honest, had little other selling points. So the advertising campaigns boasted the "German engineered engine" and "SEAT-PORSCHE" was prominently displayed on both sides of the car.

In reality, it wasn't a Porsche engine but it had a Porsche designed intake and "PORSCHE" displayed on the valve cover. It was available in either a 1.5 or a 1.2 liter.

I saw the one pictured below in a junkyard here two years ago.