It's probably on a par with an 8v GTI but feels a bit quicker due to the seating position and lowness to the ground. Also a MKII doesn't power oversteer round roundabouts

They were never designed to be that fast, but instead good fun at legal speeds which is exactly what they are. The Mrs MKII is a 1.8 with a 6 speed box and that's actually pretty rapid.
If you're looking to get one get an Eunos import, normally less rust and most have an LSD and better spec, avoid anything post 94 that's a UK car, they're de-tuned. 1.6 revs better but 1.8 is a tiny bit quicker. Rust is your enemy, they rot like hell on the rear section of the sills as people never check the drain holes are clear. Forced induction is an easy engine upgrade as the engine is designed to take boost and is low compression.
Any more questions, fire away!

Nick