The 8th Gen Civic in heaviest config was about 2900lb. The lightest model 3 is about 3500lb. 600lb best case. The lighter config Civic was 2500lb (not usdm iirc) vs the heaviest model 3 being 4000lb.
Early 2000s is 7th gen.
I own a 9th Gen si so the weight (about 2800lb for the sedan) is just a figure I remember.