The production 2013 Acura RDX debuts today at the Chicago Auto Show, right on the heels of the initial concept reveal last month in Detroit. The RDX coming to a dealership near you this spring closely resembles the original concept, with a hint of platformmate Honda CR-V.

The RDX is slightly longer than the CR-V, and it is most distinguished from it and the original RDX by its powertrain. Gone is the unrefined, not particularly fuel-efficient turbocharged four-cylinder, replaced with a 273-horsepower, 3.5-liter V6 fitted with a six-speed automatic transmission.

Acura claims this larger engine, producing 33 more horsepower over the outgoing model, will deliver better fuel economy. Initial EPA estimates put the front-drive RDX at 20 city, 28 highway mpg. The all-wheel-drive RDX is estimated at 19 city, 28 highway mpg.

As with the new ILX sedan, interior notables include a Pandora radio interface for streaming Internet audio, text message integration, and keyless access with push-button start. It goes one, make that two, better than the ILX with a three-view back-up camera. Less exciting, though more practical, news is that the RDX promises to provide more passenger space with larger doors to ease access, increased cargo space, and an available power liftgate.

A Technology package packs the RDX with a surround-sound audio system and navigation, with real-time traffic and weather information.

The RDX will go on sale this spring.