2007 Acura RDX offers a new Honda 4cyl engine, 2.3L Turbo 4cyl, 240HP Translates to 19/23 MPG. Honda's own MDX offers the ever-popular Honda 3.5L V6 that's rated at 253HP/250ft-lb torque, and offers MPG of 17/23. This same engine is my Saturn Vue, which ironically, competes in the same segment of the small-ute/crossover market. It's rated at 20/28MPG. Usually, I see about 22MPG, highway trips at 60MPH or so will touch 30MPG. It's an efficient engine all in all IMO. So, why put some turbo 4-banger on the market that doesn't offer any real performance nor MPG difference? I don't get it. Honda usually doesn't confuse the consumer with it's offerings. You either get the "base" engine or the "upscale" engine. In recent years, only one option for a given model has made thoice easy for the consumer.