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The NX Series’ optional pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The Stelvio doesn’t offer pre-crash pretensioners.
The NX Series has standard Whiplash Injury Lessening Seats, which use a specially designed headrest to protect the driver and front passenger from whiplash. During a rear-end collision, the Whiplash Injury Lessening Seats system moves the headrests forward to prevent neck and spine injuries. The Stelvio doesn’t offer a whiplash protection system.
Over 200 people are killed each year when backed over by motor vehicles. The NX Series offers an optional Intuitive Parking Assist with Automatic Braking that use rear sensors to monitor and automatically apply the brakes to prevent a rear collision. The Stelvio doesn’t offer backup collision prevention brakes.
The NX Series offers an optional Panoramic View Camera to allow the driver to see objects all around the vehicle on a screen. The Stelvio only offers a rear monitor and front and rear parking sensors that beep or flash a light. That doesn’t help with obstacles to the sides.
The NX Series’ driver alert monitor detects an inattentive driver then sounds a warning and suggests a break. According to the NHTSA, drivers who fall asleep cause about 100,000 crashes and 1500 deaths a year. The Stelvio doesn’t offer a driver alert monitor.
The NX Series has standard Safety Connect®, which uses a global positioning satellite (GPS) receiver and a cellular system to help track down your vehicle if it’s stolen or send emergency personnel to the scene if any airbags deploy. The Stelvio doesn’t offer a GPS response system, only a navigation computer with no live response for emergencies, so if you’re involved in an accident and you’re incapacitated help may not come as quickly.
Both the NX Series and the Stelvio have standard driver and passenger frontal airbags, front side-impact airbags, driver knee airbags, side-impact head airbags, front seatbelt pretensioners, height adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights, rearview cameras, available all wheel drive, blind spot warning systems and rear cross-path warning.
For its top level performance in all IIHS frontal, side, rear impact and roof-crush tests, with its optional front crash prevention system, and its standard headlight’s “Acceptable” rating, the Insurance Institute for Highway Safety grants the NX Series the rating of “Top Pick” for 2018, a rating granted to only 104 vehicles tested by the IIHS. The Stelvio has not been tested, yet.
Lexus’ powertrain warranty covers the NX Series 2 years and 20,000 miles longer than Alfa Romeo covers the Stelvio. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 6 years or 70,000 miles. Coverage on the Stelvio ends after only 4 years or 50,000 miles.
The NX Series’ corrosion warranty is 2 years longer than the Stelvio’s (6 vs. 4 years).
There are over 38 percent more Lexus dealers than there are Alfa Romeo dealers, which makes it easier should you ever need service under the NX Series’ warranty.
A reliable vehicle saves its owner time, money and trouble. Nobody wants to be stranded or have to be without a vehicle while it’s being repaired. Consumer Reports rates the NX Series’ reliability 58 points higher than the Stelvio.
J.D. Power and Associates’ 2019 Initial Quality Study of new car owners surveyed provide the statistics that show that Lexus vehicles are better in initial quality than Alfa Romeo vehicles. J.D. Power ranks Lexus 8th in initial quality, above the industry average. With 28 more problems per 100 vehicles, Alfa Romeo is ranked 29th, below the industry average.
On the EPA test cycle the NX 300h gets better fuel mileage than the Stelvio AWD (33 city/30 hwy vs. 22 city/28 hwy).
Regenerative brakes improve the NX Series 300h’s fuel efficiency by converting inertia back into energy instead of wasting it. The Stelvio doesn’t offer a regenerative braking system.
The NX 300h has a standard continuously variable transmission (CVT). With no “steps” between gears, it can keep the engine at the most efficient speed for fuel economy, or keep it at its peak horsepower indefinitely for maximum acceleration. The Stelvio doesn’t offer a CVT.
The NX Series stops much shorter than the Stelvio:
60 to 0 MPH
60 to 0 MPH (Wet)
For better maneuverability, the NX Series’ turning circle is 1.1 feet tighter than the Stelvio’s (37.4 feet vs. 38.5 feet).
As tested by Car and Driver while at idle, the interior of the NX 300 F Sport AWD is quieter than the Stelvio AWD (37 vs. 43 dB).
The NX Series has 6.2 inches more front legroom and 4.2 inches more rear legroom than the Stelvio.
For enhanced passenger comfort on long trips the NX Series’ rear seats recline. The Stelvio’s rear seats don’t recline.
Pressing a switch automatically lowers or raises the NX Series’ optional rear seats, to make changing between cargo and passengers easier. The Stelvio doesn’t offer automatic folding seats.
The NX Series’ instruments include an oil pressure gauge and a temperature gauge - which could save your engine! Often ‘idiot lights’ don’t warn you until damage has been done. The Stelvio has neither an oil pressure gauge nor a temperature gauge.
If the windows are left open on the NX Series the driver can close them all at the outside door handle. On a hot day the driver can lower the windows at the outside door handle or from a distance using the keyless remote. (Your Lexus service department must activate this window function.) The driver of the Stelvio can only operate the windows from inside the vehicle, with the ignition on.
When the NX Series with available tilt-down mirrors is put in reverse, both rearview mirrors tilt from their original position. This gives the driver a better view of the curb during parallel parking maneuvers. Shifting out of reverse puts the mirrors into their original positions. The Stelvio’s mirrors don’t automatically adjust for backing.
Optional air-conditioned seats in the NX Series keep the driver and front passenger comfortable and take the sting out of hot seats in summer. The Stelvio doesn’t offer air-conditioned seats.
Insurance will cost less for the NX Series owner. The Complete Car Cost Guide estimates that insurance for the NX Series will cost $690 to $1745 less than the Stelvio over a five-year period.
The NX Series will cost the buyer less in the long run because of its superior resale value. The IntelliChoice estimates that the NX Series will retain 50.95% to 51.77% of its original price after five years, while the Stelvio only retains 40.25% to 42.03%.
IntelliChoice estimates that five-year ownership costs (depreciation, financing, insurance, fuel, fees, repairs and maintenance) for the Lexus NX Series will be $9120 to $11238 less than for the Alfa Romeo Stelvio.
Consumer Reports® recommends the Lexus NX Series, based on reliability, safety and performance. The Alfa Romeo Stelvio isn't recommended.
The Lexus NX Series outsold the Alfa Romeo Stelvio by over five to one during 2018.
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