For decades I've been driving the M40 between Oxford and London
There is a section, eastbound, near the Princess Risborough turnoff that is fairly steep. Signage warning of slow lorries
In all my 1.8 and 2 litre cars, to keep at 70, I've almost had to floor the throttle
Done this hill in the MK4 a few times recently and I hardly have to press any harder, it just sails up there with power to spare for acceleration as well