Not everyone's cup of tea style wise but his tests are well regarded and appear impartial. Worth a watch ....
EDIT: Added this one as well .... he ran the same car to absolute empty and then recharged from battery unit in the boot. It fared well on this test as well.
EDIT: Added this one as well .... he ran the same car to absolute empty and then recharged from battery unit in the boot. It fared well on this test as well.