Acura slow-selling SLX, which was little more than a rebadged Isuzu Trooper. The MDX was a car-like crossover SUV with limited off-road capability that catered to the demands of the luxury SUV market. It was given top honors by Car and Driver in its first comparison test against seven other SUVs. Other cars in Acura's line-up during this time included the 3.2 TL, 3.2 CL, RSX (formerly the Integra hatchback), and the NSX. By the late 2000s, Acura had dropped the inclusion of engine displacement numbers in its vehicle designations, retaining a simpler, two- or three-letter designation instead (e.g. 3.5 RL
Criticism of sport utility vehicles and SUVs were "characterized by a poor environmental performance." Another study found that family size internal combustion vehicles still produced fewer emissions than a hybrid SUV. Various eco-activist groups, such as the Earth Liberation Front or Les Dégonflés have targeted SUV dealerships and privately owned SUVs due to concern over increased fuel usage. In the US, light trucks and SUVs are held to a less-strict pollution control standard than passenger cars. In response to the perception that a growing share of fuel consumption and emissions are attributable to these vehicles, the Environmental Protection Agency ruled that by the model year