"There are going to be a lot of vulgar 4x4s that are going to be utterly toxic and unsellable in London soon - don't get caught out if you intend splurging on new wheels." There are going to be a lot of ordinary cars that are going to be [deemed] utterly toxic and unsellable in London soon. People carriers, hatchbacks, saloons, crossovers. Anything diesel registered before 2015, generally. Shockingly, you'll still be able to drive up to a 15-year-old Euro3/4/5 black cab, which won't even be fitted with a DPF.