Fruit juice brand Copella is offering a Land Rover Freelander, worth £17,000, in an on-pack promotion across its range.
Rolling out now, more than one million bottles will sport a collarette detailing the promotion, which involves answering a question and completing a tie-breaker.
The winner will be selected by an independent panel of judges. Prizes also include 200 branded picnic hampers.
A spokesman for brand owner Tropicana said Freelander was an aspirational brand for Copella's target consumers who came predominantly from the ABC1 socio-economic group.
The promotion follows one last year which also ran across Copella's six-strong portfolio of apple-based juice combinations.
It used the collarette mechanic and offered a top prize of a room makeover from Laura Ashley.