The Mercedes-Benz M-Class maybe the right mid-size, 5-passenger luxury crossover for your mid-size family. This high-end mini- ute displays ostentatiously the prestige and the comfort that M-B has made famous. At the same time if offers a plethora of engine choices, its 80.3 cubic feet of toting space with the rear seatbacks folded and all the bells and whistles that the wealthy commuter, back-woods-vacationer or mall-hopper may need. . Bringing a refreshed trim lineup for 2015, the M-Class brings back the base ML350 while replacing the old ML350 BlueTEC with a new ML250 BlueTEC and the now-historic ML550 with the new ML400. The flagship ML63 AMG, offspring of M-B’s racing division, remains at the top of the M-Class lineup for the next model year. In the meantime all iterations except the ML350 come with standard AWD, known as 4Matic in Mercedes-land. The entry-level ML350comes FWD but gets the 4Matic configuration as an option. Not only the trims have been reconfigured, there are also a couple of new engines. The ML250 BlueTEC replaces the old 3.0-liter turbodiesel V6 for a livelier 2.1-liter turbodiesel inline 4-cylinder (I4) powerplant that produces over 300 hp a significant increase compared to the former 240 hp. Meantime, the new-for-2015 ML400 makes a 329-hp twin-turbocharged V6 engine that’s expected to be more fuel-efficient due to its improved variable valve timing (VVT) and auto stop/start technology. It allows some 7,200lbs of trailer-towing grunt when properly equipped. Definitely, the ML350 in the standard RWD and available AWD configuration carry the direct-injected (DI) 3.5-liter normally aspirated V6 that’s been slightly modified for a bit more fuel efficiency and can tow up to 6,600lbs. The ML63 AMG comes back bringing its over-the-top 5.5-liter twin-turbocharged gasoline-burning V8 that produces an impressive 518 hp and 516 lb-ft of torque. Fuel economy estimates are 13/17mpg. This sport-oriented beast again is capable of towing 7,200lbs.with the proper equipment. All engines, are coupled with a standard 7-speed shiftable automatic transmission, complete with steering-wheel-mounted paddle shifters. Going up the higher trims, look for extras like GPS navigation, memory settings for up to 3 drivers, GPS navigation and in the ML63 AMG: a performance steering wheel, a sport-tuned suspension, and sport front seats. In terms of options, the less expensive 2015 M-Class variations remain eligible for many of the goodies that come standard on higher-priced trims as optional, stand- alone equipment. Features like a trailer hitch and wiring, smartphone-interfaced MB Apps, rear-seat DVD entertainment and almost upgrades without limits to wheels, exterior trim and interior accent materials remain available to selected trims only.