By Heather Burlingame, Senior Production Editor | September 28, 2010

800 SeriesWith a noise reduction of 1 to 3 dB(A), the 800 Series is quieter than its predecessor, the 700 Series. A family of two 4-cylinder engines, the 800 Series fits in the company's 58- to 80-brake-horsepower power band. Buyers can choose either naturally aspirated, indirect-injection (IDI) or direct-injection models (DIT). Warranty periods have been extended to 2 years.