Cars

Mercedes is not a very popular brand for drifting since it's more of a luxury brand, but you can drift any Mercedes, except for the A-class of course. 190Es are great for drifting! 

Porsche makes high performance sports cars and so all RWD Porsches will be a joy to drift. Be aware that you need to go after one with RWD, and not one with a 4WD system. 

Suzuki has the Cappuchino which is actually quite a good and very balanced car for drifting. It is sometimes even spotted on drifting events, but isn't the most popular choice.

Volvo's older car line-up used to be RWD and offered some great cars that are happy to go sideways. The 340 till 360, the 240 till 266 and the 740-780 are the ones you want for drifting.

Dodge offers the Charger and the Viper. Both have been used in Formula D. You don't see these cars around amateur events, but you stop wondering why if you find out their pricetag.

Pontiac has the GTO, also known as the Holden Monaro it has been quite an influence to the American drifting scene. Rhys Millen drove a Pontiac GTO in the Formula D competition.

Opel/Vauxhall has quite a lot of RWD cars but again, most of them are older cars like the Omega, Manta, Kadett, Ascona, etc. If you want something newer get the new GT or Speedster.