off-roader
A vehicle designed to be used on rough terrain, usually recreationally, as opposed to everyday driving on paved streets. We're going to take our off-roaders out to the desert this weekend.
middle of the road
1. Describing an option that is neither the most nor the least expensive. I don't need a high-end TV, but I don't want the cheapest one either. I'm looking for a middle of the road option.
2. Moderate or centrist. Most of the voters found the candidate's middle of the road platform to be reasonable and palatable.