The Infiniti QX50 has an all-new, innovative engine and a roomy, quiet, and well-furnished interior. But the engine doesn't provide the promised performance or fuel economy, and the controls are confusing to use.

There's quick acceleration from a stop, but the engine's high revs become annoying­ly loud, disrupting an other­wise quiet cabin. The QX50's 22 mpg overall in CR testing falls below results for its key competitors, and Infiniti's own fuel-economy claims of 26 mpg combined.

The QX feels ponderous to drive, even in day-to-day use, partly because of its overly light steering; this SUV handles more like a larger vehicle. The suspension absorbs most bumps, but some thumps punch through harder than expected. 

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It's easy to get into the spacious cabin, and the fit and finish is a high point, featuring quality leather and chrome throughout.

Overall, the front seats are comfortable, but the bottom cushion is too short. Also, the lumbar adjustment is only two-way, which is unexpected at this price.

The infotainment controls are very confusing. We found it a hassle to select the correct function on the dual screens at a glance. It takes too many steps to execute some common tasks, such as programming audio presets.

We did, however, find the optional 360-degree vehicle display helpful when parking.

The key safety features, forward-collision warning with pedestrian detection and automatic emergency braking, come standard.

See the complete Infiniti QX50 road test.

HIGHS: Quiet interior, fit and finish, braking, standard advanced safety equipment
LOWS: Confusing controls, short on agility
POWERTRAIN: 268-hp, 2.0-liter four-cylinder turbo engine; continuously variable; all-wheel drive
FUEL: 22 mpg on premium fuel
PRICE AS TESTED: $51,380

Editor's Note: This article also appeared in the August 2018 issue of Consumer Reports magazine.