Both are great classes, and have there advantages. Getting sponsors, either product or finances will be easier in a UTV. If your good and can win or are consistent you could even get manufacture support. There are 4 classes of UTV to choose from. The Stock class which is going to be the most affordable is growing. Do people spend 6 figures in a UTV? Some do, but most don’t and I don’t believe you need to. Guys like Brandon Sims, Brandon Schuller both race in Pro Turbo. Both can win and are both in top equipment with Polaris backing and their cars are not 6 figure cars. Sims raced using a off the shelf Lone Star suspension kit that anyone could buy. Schuller still runs a factory muffler. But like others have said as the UTV models change, or as the race series change the rules to support those new cars, it can make racing a competitive UTV harder. But what is nice is the amount of series that offer UTV classes. D38 which is a local series that races in Plaster City is great for guys who want to race, but can’t afford or compete in the top tear series. Entry fees are $150, no tracker fees and no prerunning to control costs.
1600 cars are a true drivers class. The racing is close on the shorter courses. You better be brave to hold it wide open, learn how to keep momentum in the corners, if you want to win races. Mechanically I think there is less to break and are more simple to work on, which makes it cheaper to maintain. But don’t expect to find as much product or financial sponsorship support as a UTV. A 1600 car is going to be more durable then a UTV hands down. The front can take a beating like not other. The limited travel suspension will beat you up way more then a UTV will. But one of the best parts about a 1600 car is a 1 year old car or 10 year old car are still going to be legal, and competitive. Sure little things change, but it’s only bolt on parts. Offroadracer516 is a perfect example of racing an older car and being very competitive. Sure he’s upgraded the shocks, engine etc. to todays standards, but his 20 year old chassis is still competitive today. Also let’s say you race for a couple years and then stop for a few years due to life. You can start back up with that same car and race anywhere that has a 1600 class and your car will be legal and can be competitive. (Let’s hope they keep smart shocks out of the class)
One other thing to consider is what series you are wanting to race, and where. You don’t see as many 1600 cars racing the top series like Score & BITD anymore. So if those are the races you want to race with larger entries, maybe the UTV is your vehicle. If you want to race a more budget friendly series in the local deserts like MORE or SNORE, then a 1600 would be the better choice.