The 1984 film Starship, also released as Lorca and the Outlaws, and 2084, does involve a fight over a giant truck in a desert landscape, although I feel like you would have mentioned the android.
On the remote mining planet Ordessa, the management uses killer military police androids to crack down on workers upset with the terrible conditions. Lorca (John Tarrant) and his mother Abbie (Donogh Rees) led the human underground resistance movement until Abbie was killed by androids. Now, Lorca and Suzi (Cassandra Webb) battle Captain Jowitt (Ralph Cotterill) and the brutal bounty hunter Danny (Hugh Keays-Byrne), with the help of the friendly android Grid (Deep Roy).
This review specifically mentions the fight.
Somehow - don’t ask me how - Lorca and Grid end up at a big open-cast mine with giant lorries, the sort that have tyres 20 feet in diameter. This futuristic setting with its futuristic vehicles is represented by a big open-cast mine with giant lorries, the sort that have tyres 20 feet in diameter. There is no attempt whatsoever to disguise this cool but badly-used location.
On returning, he is captured by Danny (Hugh Keays-Byrne: Mad Max, Les Patterson Saves the World, Farscape: The Peacekeeper Wars and the 1999 version of Journey to the Centre of the Earth), a grimacing, unkempt bounty hunter employed by Captain Jowitt (tick another cliché box, folks; heck, tick a bunch of them) who has already captured Grid and uses him as bait. The two rebels are thrown into the back of a giant truck with a single droid guard who is easily overcome. There follows a deeply unthrilling ‘fight’ between Lorca and Danny which ends with the truck rolling gently into a wall of earth with a small explosion to suggest that it has crashed in some way (they couldn’t actually damage the thing of course, on account of how much those trucks cost). Danny is thrown into the earthbank but we later see his hand emerge so he’s - gasp - not dead. Lorca repairs Grid, whose head has come off.
You can see some clips of the movie in this bit featuring the music of Genesis, who scored the film: