It's not easy to spot review of cars that give the impression they could be convertibles (8)
I believe the answer is:
hardtops
'cars that give the impression they could be convertibles' is the definition.
'hardtops' can be an answer for 'cars' (hardtop is a kind of car). I'm unsure of the remainder of the definition.
'it's not easy to spot review' is the wordplay.
'it's not easy' becomes 'hard' ('hard' is the opposite to 'easy').
'to' says to put letters next to each other.
'review' says the letters should be written backwards.
'spot' reversed gives 'tops'.
'hard'+'tops'='HARDTOPS'
'of' is the link.
Can you help me to learn more?
(Another definition for hardtops that I've seen is " Some cars".)