Car needing a wash, last of water brought in (6)

I believe the answer is:

abarth

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'car' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.

'a wash last of water brought in' is the wordplay.
'wash' becomes 'bath' (bath is a kind of wash).
'last of' suggests the final letters.
'brought in' indicates putting letters inside.
The last letter of 'water' is 'r'.
'bath' going around 'r' is 'barth'.
'a'+'barth'='ABARTH'

'needing' acts as a link.

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I've seen this clue in The Guardian.

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