Ancira Nissan Compares 2017 Nissan Altima VS 2017 Infiniti Q50 Near San Antonio, TX

Responsive image

2017 Nissan Altima

Responsive image

2017 Infiniti Q50

Safety Comparison

The Altima Sedan has standard Active Head Restraints, which use a specially designed headrest to protect the driver and front passenger from whiplash. During a rear-end collision, the Active Head Restraints system moves the headrests forward to prevent neck and spine injuries. The Q50 doesn’t offer a whiplash protection system.

Both the Altima Sedan and the Q50 have standard driver and passenger frontal airbags, front side-impact 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, available crash mitigating brakes, daytime running lights, lane departure warning systems, blind spot warning systems, rearview cameras and rear cross-path warning.

The National Highway Traffic Safety Administration does 35 MPH front crash tests on new vehicles. In this test, results indicate that the Nissan Altima Sedan is safer than the Infiniti Q50:


Altima Sedan



5 Stars

4 Stars




5 Stars

4 Stars

Neck Injury Risk



Neck Stress

216 lbs.

223 lbs.

Leg Forces (l/r)

32/46 lbs.

185/312 lbs.




4 Stars

3 Stars

Chest Compression

.6 inches

1 inches

Neck Injury Risk



Neck Stress

113 lbs.

145 lbs.

Neck Compression

62 lbs.

85 lbs.

New test not comparable to pre-2011 test results. More stars = Better. Lower test results = Better.

The National Highway Traffic Safety Administration does side impact tests on new vehicles. In this test, which crashes the vehicle into a post at 20 MPH, results indicate that the Nissan Altima Sedan is safer than the Infiniti Q50:


Altima Sedan



Into Pole


5 Stars

5 Stars

Max Damage Depth

17 inches

19 inches

New test not comparable to pre-2011 test results. More stars = Better. Lower test results = Better.

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 available headlight’s “Acceptable” rating, the Insurance Institute for Highway Safety grants the Altima Sedan its highest rating: “Top Pick Plus” for 2017, a rating granted to only 46 vehicles tested by the IIHS. The Q50 has not been fully tested, yet.

Warranty Comparison

There are over 5 times as many Nissan dealers as there are Infiniti dealers, which makes it much easier should you ever need service under the Altima Sedan’s warranty.

Reliability Comparison

A reliable vehicle saves its owner time, money and trouble. Nobody wants to be stranded or have to be without their vehicle while it’s being repaired. Consumer Reports predicts that the Altima Sedan’s reliability will be 28% better than the Q50.

J.D. Power and Associates rated the Altima Sedan second among midsize cars in their 2016 Initial Quality Study. The Q50 isn’t in the top three in its category.

J.D. Power and Associates’ 2016 Initial Quality Study of new car owners surveyed provide the statistics that show that Nissan vehicles are better in initial quality than Infiniti vehicles. J.D. Power ranks Nissan 10th in initial quality, above the industry average. With 2 more problems per 100 vehicles, Infiniti is ranked 12th.

Fuel Economy and Range Comparison

To lower fuel costs and make buying fuel easier, the Nissan Altima Sedan uses regular unleaded gasoline. The Q50 requires premium, which can cost 20 to 55 cents more per gallon.

Tires and Wheels Comparison

The Altima Sedan has a standard easy tire fill system. When inflating the tires, the vehicle’s integrated tire pressure sensors keep track of the pressure as the tires fill and tell the driver when the tires are inflated to the proper pressure. The Q50 doesn’t offer vehicle monitored tire inflation.

Suspension and Handling Comparison

For better handling and stability, the average track (width between the wheels) on the Altima Sedan is 1.6 inches wider in the front and .6 inches wider in the rear than the average track on the Q50.

The Altima Sedan 3.5 SL handles at .87 G’s, while the Q50 pulls only .86 G’s of cornering force in a Road and Track skidpad test.

For better maneuverability, the Altima Sedan 2.5/2.5 S’ turning circle is .6 feet tighter than the Q50’s (36.1 feet vs. 36.7 feet).

Chassis Comparison

The Nissan Altima Sedan may be more efficient, handle and accelerate better because it weighs about 450 to 650 pounds less than the Infiniti Q50.

The front grille of the Altima Sedan 2.5 uses electronically controlled shutters to close off airflow and reduce drag when less engine cooling is needed. This helps improve highway fuel economy. The Q50 doesn’t offer active grille shutters.

Passenger Space Comparison

The Altima Sedan has .5 inches more front legroom, .8 inches more front hip room, 1 inch more rear legroom and .3 inches more rear shoulder room than the Q50.

Cargo Capacity Comparison

The Altima Sedan has a much larger trunk than the Q50 (15.4 vs. 13.2 cubic feet).

The Altima Sedan’s standard rear seats fold to accommodate long and bulky cargo. The Q50 Base/Hybrid doesn’t offer folding rear seats, only a ski pass-through.

Ergonomics Comparison

The Altima Sedan offers a remote vehicle starting system, so the vehicle can be started from inside the driver's house. This allows the driver to comfortably warm up the engine before going out to the vehicle. The climate system will also automatically heat or cool the interior. The Q50 doesn’t offer a remote starting system.

Economic Advantages Comparison

According to The Car Book by Jack Gillis, the Altima Sedan is less expensive to operate than the Q50 because it costs $486 less to do the manufacturer’s suggested maintenance for 50,000 miles. Typical repairs cost much less on the Altima Sedan than the Q50, including $406 less for a water pump, $223 less for an alternator, $20 less for front brake pads, $84 less for a starter, $73 less for fuel injection, $45 less for a fuel pump, $245 less for front struts, $694 less for a timing belt/chain and $1340 less for a power steering pump.

Recommendations Comparison

J.D. Power and Associates rated the Altima Sedan second among midsize cars in owner reported satisfaction. This includes how well the vehicle performs and satisfies its owner’s expectations. The Q50 isn’t in the top three.

The Nissan Altima Sedan outsold the Infiniti Q50 by over seven to one during the 2016 model year.

© 1991-2016 Advanta-STAR Automotive Research. All rights reserved. Who We Are
Click here to view the disclaimers, limitations and notices about EPA fuel mileage, crash tests, coprights, trademarks, and other issues.