Buggy Run is an isometric racing arcade style game. It is difficult. This game makes you hit the ground running. You absolutely need to upgrade your engine and stock up on turbos to get a win. Your opponents are very quick and can take you out without warning with weapons. It took me lots of practice before I got my first win. Upgrading to max my speed was top priority, then the other upgrades followed. I can't stress enough that this game will not give you chances to catch up. It's get good to win. Use the prize money at every race to increase your speed and buy as many turbos you can.
Nothing wrong with a difficult racer. However, I would say all the upgrades are kinda superfluous, if all you need to rely on is max speed and turbos to win a race. The game does offer a practice mode, so you can master all the tracks. It really feels like the game wants you to take it seriously, rather than treating it like a kiddy racer with colorful cars. Credit for not babying us.
It's not a bad game. It's just difficult. Maybe it takes itself too seriously at a fault. I say give it a shot if you're looking for a challenge. Just don't expect to win any races right away, unless you're an isometric racing game wizard.