There are various track sizes and quantities of cars available on a dodgems track. As a general rule you should be looking for a ride with 14-16 cars. This an ideal number for virtually any event. Much less and you end up with endless queues for the rides, much more and you have a traffic jam that would put the M25 to shame.
Beware some operators offering suspiciously low quotes to rent bumper cars, a favourite trick is advertising prices much lower to win the job. When the dodgems turn up, they have no roof covering (useless in the rain), no lights or music.
When complaining you are told that you have hired the cheap option. These things can be added back to your package, but you will be paying extra for them, and probably end up paying more than you would have done if hiring the 'complete' ride in the first place.
There are 2 basic types of dogem carz available.
Tending to be newer, with better sound and lighting systems, and more decorative artwork. Supplied on a trailer system which folds out on site, these are more impressive than regular rides, but need to be driven into position, cannot go over walls, or around really tight bends.
Traditional Type Track
These are the original type ride, less ornate or visually exciting than the modern version. Their big advantage is the fact that they dismantle so can access those venues impossible for their bigger cousins. At vintage or retro themed events, they may be a better fit.
An Example Of One Of Our Modern Dodgem Cars