TL.It is roomier and a large luxury sports sedan. You should like it more.Plus the RDX is a Turbocharged SUV, which means you need to wait 45 seconds before turning the car off to let the turbocharger cool down every time you drive it. If you do not do that, the Turbocharger will have a shorter life(50,000-60,000 mikes) and will cost $1500+ to replace.Both cars require premium gas. 91 octane or better. And both require synthetic oils.