Cosworths are reliable as anyother car lol. Only times I ever had mine brake down and towed in about 10 years and mine was quite heavily modified was twice breaking the diff and when I broke a piston. Other than that only faults I had was battery going flat due to lack of use and once it wouldn't start as a terminal fell off the fuel pump relay. Can't wait to start using mine again next year and the only thing I carry in mine is a torch and a small bottle of oil / some rag.