My 240D was a completely stock '77 four speed. I used to do like Jerry Reed said, "Put that hammer down and give it hell". There were occasions when I kept it floored for an hour or more at a time. The limiting factor wasn't the car, it was my right leg. The car handled it just fine. Fuel economy did suffer a bit when I drove like that.

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Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar.

83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 401,xxx miles
08 Suzuki GSX-R600 M4 Slip-on 26,xxx miles
88 Jaguar XJS V12 94,xxx miles. Work in progress.
99 Mazda Miata 183,xxx miles.