their cars have a very good reputation for reliability
Compare a Porsche 911 versus Corolla on a track and see which one is actually more reliable after 20 hard laps.
Expand, I'm interested. I mean, my thought would be, Germany is the land of the no-speed-limit autobahn, the US was 55 everywhere until recently.
I mentioned IMS issues elsewhere in this thread, but I think you're also being disingenuous with the Cayenne.
The Cayenne is a pretty darn impressive vehicle- a full sized SUV that handles well enough to be fun on a race track, and yet also does incredible offroad. It has a lot of engine options, and while some of the earlier high performance V8 engine options had issues, most of them are very reliable. It does pay for all of that performance and capability by being pretty complex, but it's also very well built. As the older Cayennes have become cheap, there's a big following now of people doing serious offroading in them, and the suspension, body, and interiors really hold up well to hard offroad use.
I would say Porsche engines tend to have new design flaws when they do a ground up engine redesign cycle, because they are really pushing the limits with new ideas and tech, and they get reliable again after a few years. Most other car companies pretty much avoid doing that, or doing it as often, because they aren't trying to extract as much performance.
What was your experience, and with what model(s)? Sounds like you got burned.
Not saying that Porsche didn't improve their quality a lot, but it was Lexus that really dropped the ball there.
For 18+ hours of w2w racing I'd take the Corolla.
In any case, apples and oranges. Porsche seems to build reliable stuff compared to their actual competitors which are Ferrari, Lotus, etc etc. Toyota comparisons are meaningless.
That was my point
This is what I read. I'd still put money on the Toyota if the test is not blowing up.
Look at this for example:
Porsche 986 Boxster S front brake rotor: 318 mm x 28 mm
Toyota Corolla AE101R front brake rotor: 238 mm x 22 mm
You have massively larger brakes on the Porsche... and many Corollas even have ancient drum brakes on the rear, which can barely dissipate enough heat for normal non-track driving. The Corolla will boil it's brake fluid on the track, and the pedal will go soft which is extremely dangerous.