https://mr2oc.co.uk/forum/42/144537.html
The issue isn't really the cats, it's the piston rings on the early cars. They aren't quite up to the job and end up wearing the cylinder bores oval. In turn oil then gets into the pre-cats which start to break down and then get sucked into the engine. Loads of discussion on the various forums, eg. above. Toyota changed the engine design in 2002-03 so all facelift cars have the new engine. Facelift cars have 6 not 5 gears, fog lights on the front bumper, the round lenses on the rear lights. There are plenty of older cars with huge mileages, so it doesn't impact all cars, but the safest thing to buy is a post facelift car.
I have a 2004 one and love it, it's not at all pristine, but makes me smile every time I drive it. Only paid £2.5k and I reckon it's worth the same or a bit more now.
Weak points are:
- the original vinyl hood, eventually goes brittle, especially if parked outside. A real replacement if pretty pricey, but there's a bloke in Swansea that will make you a new one for £350 or so
- handbrake - the route of the cables is a bit tortuous and the handbrake is just a bit rubbish. It can be adjusted but at some point not enough to pass the MOT, and then you need to drop the fuel tank to fit new cables.
- power use, the alarm, clock etc all use a bit of power so if you don't use it often the battery can run down. I fitted an always-on cigarette lighter socket and leave a solar charger on the dash which keeps the battery topped up.
- luggage space, obviously. But then if you wanted a sensible car you'd buy an s-max. I think of my MR2 like having a motorbike with paniers and 2 extra wheels. It's still better than a caterham!
enjoy it.
Phil