Vehicle manufacturer, learn it is in trouble (7)

I believe the answer is:

reliant

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'vehicle manufacturer learn it is in trouble' is the definition.
I can't tell whether this definition defines the answer.

'learn it is in trouble' is the wordplay.
'is in trouble' indicates an anagram.
'learn'+'it'='learnit'
'learnit' with letters rearranged gives 'RELIANT'.

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(Other definitions for reliant that I've seen before include "Dependent - latrine (anag)" , "Dependent upon" , "Lent air (anag.)" , "Entrail (anag) - depending (on)" , "needing help from others" .)

I've seen this clue in The Telegraph.

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