calipers. Although traction control is standard, the M Dynamic Mode (MDM) reduces the effect of the system, allowing some wheelspin and drift-type cornering. For the 2013 model lineup, BMW introduced the M Performance Package available for the xDrive35i and xDrive50i. The M Performance Package models have nearly identical features to the X5 M (sport suspension, wider fenders, staggered wheels, etc.) excluding the quad-tip exhaust, headlights, and engines. The M Performance Package also bumped up the engine output for both models - an additional for the xDrive35i and for the xDrive50i (torque was also increased by 30 lb-ft for both). M Performance Parts were available for the X5 M. These include black kidney grilles, steel pedals, a sport steering wheel and M rims. Model lineup Engines Petrol engines Diesel engines Since 2008, vehicles sold with diesel engines in the United States are equipped with selective catalysator using Diesel exhaust fluid (DEF) to reduce NOx emissions, while vehicles sold in Europe had a bypass exhaust pipe only due the regulations which ended up in Dieselgate. Transmissions All models include a 6-speed Steptronic automatic transmission. The new 8-speed transmission is standard in the xDrive50i and xDrive35i from 2011 model year. Performance Safety Winner of Top Safety Pick 2008 by Insurance Institute for Highway Safety. NHTSA 2010/2011 X5 "Life Cycle Impulse" (LCI) Changes In 2010 the X5 underwent a "Life Cycle Impulse" (LCI) update, debuted at the New York Auto Show in April 2010 and introduced as 2011 models in BMW North America markets. The changes included revised styling, primarily of the front and rear bumpers, air intakes, headlights, and taillights as well as new exterior and interior colors and new options combination. It also included BMW Group's latest infotainment system. HD Radio, previously an option, was now standard on all X5 models in North America. More significantly, a new range of engines, all turbocharged and with direct injection was introduced. In the North American market, available gasoline power trains are the xDrive 35i twin-scroll turbo six-cylinder and the xDrive50i twin turbo V8, both coupled to an eight-speed automatic Steptronic transmission. These petrol engines are more powerful than their predecessors, with the 35i also providing improved fuel mileage and reduced emissions. The xDrive 35d turbodiesel carries over in the NA market with the six-speed transmission unchanged from the previous model year. The xDrive40d was also introduced along with a revised xDrive30d, but neither was