carrying on from my other post about which car to buy, my cousin has bought a 530 diseasal bmw, 2000 w reg

it's got a few issues though

speedo doesn't work
fuel gauge doesn't work
abs doesn't work
traction control doesn't work
asr (?) button doesn't work

considering he paid a grand for it he's not too fussed about stuff that hasn't worked but he'll obviously need it come mot time to make sure it goes through, so what are the options?

i'm thinking that due to the speedo not working it may mean that that's why the rest of the stuff is playing up?