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Infiniti's sport sedan puts a new look to an old formula (pictures)

We still dig Infiniti's Q50S despite the fact that it is still powered by the same old engine from its predecessor, the G37 sport sedan.

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Antuan Goodwin
2015 Infiniti Q50S sedan
1 of 28 Antuan Goodwin/CNET

The Infiniti Q50S is a sharply styled ride with tautly drawn sheet metal over sporty proportions.

2015 Infiniti Q50S sedan
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However, beneath its modern styling this 2015 model hides an aging heart.

2015 Infiniti Q50S sedan
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Behind the infinite-horizon badge breathes the same 3.7-liter engine that's powered this automaker's sport sedans since 2008.

2015 Infiniti Q50S sedan
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Old it may be, but the VQ37VHR engine is no slouch. Output is stated at 328 horsepower and 269 pound-feet of torque.

2015 Infiniti Q50S sedan
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The Q50 is available in either all-wheel or rear-wheel drive configurations.

2015 Infiniti Q50S sedan
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Power flows through a seven-speed automatic transmission on its way from the engine to the asphalt.

2015 Infiniti Q50S sedan
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Even laden with older tech, the Infiniti doesn't slack in the safety tech department.

2015 Infiniti Q50S sedan
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The Q50 features forward-facing radar, side-firing sonar sensors and cameras pointed in all four directions.

2015 Infiniti Q50S sedan
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The side cameras, front and rear, are used at low speeds as parking aids.

2015 Infiniti Q50S sedan
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You can select forward, side and rear views, as well as the automaker's Around View camera, which combines all four angles into a bird-eye look at the area around the car.

2015 Infiniti Q50S sedan
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The Q50 is also outfitted with optional adaptive cruise control, forward precollision intervention, blind-spot monitoring and assist, and other features.

2015 Infiniti Q50S sedan
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Infiniti was the first to market with many of these features, so their appearance in the Q50 is no surprise.

2015 Infiniti Q50S sedan
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Infiniti's dashboard tech features a two-screen setup: an upper 8-inch screen stacked atop a 7-inch secondary display.

2015 Infiniti Q50S sedan
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The upper touchscreen operates with resistive sensitivity and is the main display for navigation.

2015 Infiniti Q50S sedan
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The lower display is a capacitive touch screen that is used to control secondary functions, such as choosing audio sources, climate controls and Infiniti's apps integration.

2015 Infiniti Q50S sedan
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A display in the center of the instrument cluster showcases the status of the driver aid systems, fuel economy and trip info.

2015 Infiniti Q50S sedan
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The seven-speed automatic transmission features paddle shifters mounted on the steering column.

2015 Infiniti Q50S sedan
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One feature that I liked was the ability to quickly toggle the various driver aid technologies with a single press of the button that looks like a car surrounded by a forcefield.

2015 Infiniti Q50S sedan
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Through Infiniti's menu system, the steering weight and responsiveness can be individually tuned to the driver's preference.

2015 Infiniti Q50S sedan
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In addition to the two touchscreens, the Q50 also features a physical control knob and steering-wheel controls that both affect the upper display's functions. I think that's just too many control options to master.

2015 Infiniti Q50S sedan
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The gearbox and engine's performance are affected by the Q50's four driving modes: sport, normal, comfort and custom.

2015 Infiniti Q50S sedan
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The cabin is quite spacious, with a double-arc design that bends the dashboard away from and around the front seats' occupants.

2015 Infiniti Q50S sedan
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The information display does a good job of letting the driver know what systems are active, but not of giving information about what those systems are doing.

2015 Infiniti Q50S sedan
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With push-button start and intelligent keyless entry, the driver doesn't have to remove the fob from his or her pocket before hitting the road.

2015 Infiniti Q50S sedan
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A suite of connected features and apps boosts the dashboard's functionalities, but lags behind the newer competition.

2015 Infiniti Q50S sedan
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Most of Infiniti's "apps" are simple things like a compass, clock and performance meter.

2015 Infiniti Q50S sedan
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Though aging, the 2015 Q50S is still a solid alternative for sport sedan drivers.

2015 Infiniti Q50S sedan
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Thankfully, Infiniti is giving the Q50 a much-needed update for the 2016 model year with a new line of more powerful and efficient engines. We can't wait.

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