This car can turn a great profit when you buy it one star and rebuild it. The Bolt Reptilia is also a fairly easy one to rebuild. Do keep in mind that the engine tear down and rebuild is a bit slower as you'll be dealing with 16 Valve Push Rods and 16 Rocker Arms along the way. This is because it has a V8 OHV engine.
Purchase Price: $18,678
Repair Cost: $10,162 (+/-)
Sale Price: $56,961
Profit: $28,121 (+/-)
As you can see, the Bolt Reptilia is a great car to rebuild in Car Mechanic Simulator 2015.
Rebuilding vehicles for profit in Car Mechanic Simulator 2015 is by far the most profitable activity in the game, assuming that you're picking the right vehicles. Of course a solid supply of spare parts helps too. Here are a few links to additional information that can help you get started in the Car Rebuilding side of the game. This will help you improve your overall game experience:
Rebuilding Guide with Cost vs Profit for all Vehicles in Car Mechanic Simulator 2015
The Auctions Center - The place you buy vehicles
Complete Series of Vehicle Rebuilds for Car Mechanic Simulator 2015
Tunerz Paradize - The place to get special parts to trick out your rides