Infiniti also massages its largest model, the QX80 fullsize SUV, for ’15, updating the front fascia to resemble that on the Q50 sport sedan.

A slew of LEDs are added as well for turn signals, fog lights and high/low-beam headlights.

QX80s with the deluxe technology package get chrome-plated outside rear-mirror caps.

In all versions of the SUV, a rear-bumper protector is added as standard to reduce damage when loading and unloading cargo.

Three new exterior colors, a blue, gray and white, are offered for ’15.

In the large luxury SUV segment the wheels keep getting bigger and Infiniti claims to one-up the competition with a new 22-in., 14-spoke, forged aluminum-alloy design. However, the all-new ’15 Cadillac Escalade also offers 22-in. wheels, although topping out at seven spokes.

Standard QX80 wheels are newly designed 20-in. machine-finished aluminum alloys.

Interior updates to the Infiniti SUV include color-and-wood atmospheres with more contrast. Tuscan Burl wood trim is replaced by a darker Mocha Burl with a more reddish grain, while the Mocha Burl of the current generation’s deluxe touring package is changed to a Stratford Burl with a heavier, “fine-furniture-like” appearance, Infiniti says.

Wheat- or graphite-color leather seating still is available, but the latter now gets silver-contrast stitching instead of black stitching.

Technologies added for ’15 include the Q50’s advanced high-beam assist, standard on all grades and automatically dropping the high beams to low beams when a car approaches, as well as predictive forward-collision warning.

Most technical specifications of the QX80 carry over from ’14 to ’15, including its 400-hp 5.6L V-8 and 8,500-lb. (3,856-kg) maximum towing capacity.

Infiniti sold 5,283 copies of the M in the U.S. last year, down 42.1% from 2012, WardsAuto data shows, while combined sales of the ’14 QX80 and ’13 QX56 tallied 13,148 units, down 14.1% from the QX56’s 15,310 in 2012.

Mercedes-Benz had the top-selling mid-large luxury sedan in the U.S. last year with the E-Class, delivering 69,803 units.

Infiniti was the segment leader in large luxury SUVs, topping Cadillac Escalade sales in 2013 (12,592), if QX56 and QX80 deliveries are combined.

cschweinsberg@wardsauto.com