One of the most popular types of ATV-quads, 4WD are a great rental choice to explore Bulgarian nature and enjoy outdoors. 4WD vary in sizes and usages like recreation, agricultural work, hunting, racing, business, industrial, military or emergency services. Although the most types of ATV have 4 wheels, some of them may have three, 6 or 8 wheels. Some of the most known models feature powerful, fuel injected engines and an electric starter which enables an easy starting even high above sea level. The best known models are Polaris RANGER Crew Diesel UTV, Polaris Sportsmann Big Boss 6x6 800 and Yamaha Grizzly 700 FI Auto, 4x4 EPS special edition, which is considered one of the best ATVs ever.