Here's how many cars were totalled during the making of Furious 7: more than 230. That's on par for the series now, especially when spectacular action sequences call for a giant safe to be pulled through a city's streets or a tank to plow through traffic on a highway, squashing vehicles along the way.
For Furious 7, there were a number of automobiles wrecked during an extensive chase and fight sequence set in the Caucasus Mountains in Azerbaijan. The action really took place in Colorado, and afterward the production had to dispose of more than 40 cars, including a bunch of late-model Mercedes-Benz's (armored G-Class SUVs and S-Class sedans) driven by Jakande's (Djimon Hounsou) henchmen.
What happened to those demolished prop and stunt vehicles is revealed in an interesting story in the Wall Street Journal, which details that those specific autos wound up crushed beyond salvage at a local junk yard. There is apparently a proper way to dispose of movie cars these days to avoid lawsuits by any collectors attempting to fix up wrecked stunt cars that prove to be dangerous.
Yes, there is still hope for collectors who want drivable movie cars, but those involved in action sequences and equipped with stunt elements like roll cages and drag tires are not suited for the road -- or even for display, in the chance that one day they'd end up on the road. Sometimes wrecked stunt cars can be reused as parked background vehicles if the damage isn't noticeable, but it's important they're not mistaken for anything but set dressing.
The Wall Street Journal article also highlights details on the destruction and removal of 150 specially assembled vehicles used for Captain America: The Winter Soldier, as well as historical stunt car situations for Christine, Bullitt, Death Proof and the TV show The Dukes of Hazzard, plus Fast 5 and Fast & Furious 6.
Now that you know what happened to most of the cars after the making of Furious 7, here's a breakdown of what car brands are on display in the latest sequel and the two before it, via Concave Brand Tracking: