Gearbox Fault Evoque @ 22000 miles in Vehicle retailers and manufacturers Posted April 12, 2019 OP you need to live in the real world. after 18 months use there are no circumstances under which you can attribute any problem to the seller. You'd have great difficulty getting anything after 18 months even if you had bought it from a main dealer, let alone a private seller, where the presumption is 'buyer beware' And how on earth can you sue for depreciation? depeciation is part of car owenrship!! Are you on medication by any chance?