I need a used car with a larger boot to cope with our four children and dog. We go on regular camping trips and always carry lots of equipment. The new car must be reliable, economical, and feature lots of options. I have previously owned a Citroen Berlingo and loved it, but the turbo failed. I have also owned a Renault scenic, but that suffered gearbox sealant issues. Can you recommend a used car that I should buy?