The Maxima SL/SR/Platinum has standard Forward Emergency Braking, which use forward mounted sensors to warn the driver of a possible collision ahead. If the driver doesn’t react and the system determines a collision is imminent, it automatically applies the brakes at full-force in order to reduce the force of the crash or avoid it altogether. The Q40 doesn't offer collision warning or crash mitigation brakes.
The Nissan Maxima has Daytime Running Lights to help keep it more visible under all conditions. Canadian government studies show that driving with lights during the day reduces accidents by 11% by making vehicles more conspicuous. The Q40 doesn’t offer Daytime Running Lights.
The Maxima Platinum has a standard Around View ® Monitor to allow the driver to see objects all around the vehicle on a screen. The Q40 only offers a rear monitor and rear parking sensors that beep or flash a light. That doesn’t help with obstacles to the front or sides.
The Maxima SL/SR/Platinum’s blind spot warning system uses digital cameras monitored by computer to alert the driver to moving objects in the vehicle’s blind spots where the side view mirrors don’t reveal them. The Q40 doesn’t offer a system to reveal objects in the driver’s blind spots.
To help make backing safer, the Maxima SL/SR/Platinum’s cross-path warning system uses wide-angle radar in the rear bumper to alert the driver to vehicles approaching from the side, helping the driver avoid collisions. The Q40 doesn’t offer a cross-path warning system.
The Maxima Platinum’s 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 Q40 doesn’t offer a driver alert monitor.
Compared to metal, the Maxima’s plastic fuel tank can withstand harder, more intrusive impacts without leaking; this decreases the possibility of fire. The Infiniti Q40 has a metal gas tank.
The Maxima Platinum has standard NissanConnect, 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 Q40 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 Maxima and the Q40 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 and rearview cameras.
For its top level performance in all IIHS frontal, side, rear impact and roof-crush tests, and with its optional front crash prevention system, the Insurance Institute for Highway Safety grants the Maxima its highest rating: “Top Pick Plus” for 2016, a rating granted to only 73 vehicles tested by the IIHS. The Q40 is not even a standard “Top Pick.”
There are almost 7 times as many Nissan dealers as there are Infiniti dealers, which makes it much easier should you ever need service under the Maxima’s warranty.
The Q40’s redline is at 7600 RPM, which causes more engine wear, and a greater chance of a catastrophic engine failure. The Maxima has a 6600 RPM redline.
J.D. Power and Associates’ 2015 survey of the owners of three-year-old vehicles provides the long-term dependability statistics that show that Nissan vehicles are more reliable than Infiniti vehicles. J.D. Power ranks Nissan 12th in reliability, above the industry average. With 16 more problems per 100 vehicles, Infiniti is ranked 17th.
On the EPA test cycle the Maxima gets better fuel mileage than the Q40 RWD (22 city/30 hwy vs. 19 city/27 hwy).
For better traction, the Maxima has larger tires than the Q40 (245/45R18 vs. 225/55R17). The Maxima’s tires are larger than the largest tires available on the Q40 (245/45R18 vs. 225/50R18).
The Maxima’s standard tires provide better handling because they have a lower 45 series profile (height to width ratio) that provides a stiffer sidewall than the Q40’s standard 55 series tires. The Maxima 3.5 SR’s tires have a lower 40 series profile than the Q40’s optional 50 series front and 45 series rear tires.
For better ride, handling and brake cooling the Maxima has standard 18-inch wheels. Smaller 17-inch wheels are standard on the Q40. The Maxima 3.5 SR’s 19-inch wheels are larger than the 18-inch wheels optional on the Q40.
The Maxima 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 Q40 doesn’t offer vehicle monitored tire inflation.
The Maxima offers an optional full size spare tire so your trip isn’t interrupted by a flat. A full size spare isn’t available on the Q40, it requires you to depend on a temporary spare, which limits mileage and speed before replacement.
For better handling and stability, the track (width between the wheels) on the Maxima is 2.6 inches wider in the front and 2.4 inches wider in the rear than the average track on the Q40.
The Maxima 3.5 SR handles at .87 G’s, while the Q40 Sport Sedan pulls only .84 G’s of cornering force in a Car and Driver skidpad test.
The Maxima SL/SR/Platinum uses computer-generated active noise cancellation to help remove annoying noise and vibration from the passenger compartment, especially at low frequencies. The Q40 doesn’t offer active noise cancellation.
The Maxima has 1.1 inches more front legroom, 1.1 inches more front shoulder room and .5 inches more rear shoulder room than the Q40.
The Maxima has a larger trunk than the Q40 Sedan (14.3 vs. 13.5 cubic feet).
The Maxima’s standard rear seats fold to accommodate long and bulky cargo. The Q40 doesn’t offer folding rear seats, only a ski pass-through.
The Maxima has a standard 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 Q40 doesn’t offer a remote starting system.
The Maxima’s 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 Q40 does not have an oil pressure gauge.
A manual rear sunshade is standard in the Maxima Platinum to help block heat and glare for the rear passengers. The Q40 doesn’t offer a rear sunshade.
When the Maxima Platinum 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 Q40’s mirrors don’t automatically adjust for backing.
The Maxima Platinum has standard automatic dimming rear and side view mirrors which automatically darken quickly when headlights shine on them, keeping following vehicles from blinding or distracting the driver. The Q40 has an automatic rear view mirror, but its side mirrors don’t dim.
Standard air conditioned seats in the Maxima SR/Platinum keep the driver and front passenger comfortable and take the sting out of hot seats in Summer. The Q40 doesn’t offer air conditioned seats.
On extremely cold Winter days, the Maxima SL/SR/Platinum’s standard heated steering wheel provides comfort, allowing the driver to steer safely and comfortably before the car heater warms up. The Q40 doesn’t offer a heated steering wheel.
Both the Maxima and the Q40 offer rear vents. For greater rear passenger comfort, the Maxima has standard rear air conditioning vents to keep rear occupants cool in summer or warm in winter. The Q40 doesn’t offer rear air conditioning vents, only heat vents.
Standard NissanConnect for the Maxima allows the driver and passengers access to select programs on their smartphones, including reading text messages aloud, playing internet radio stations, searching the internet and other connected activities without taking their eyes off the road or their hands from the wheel. The Q40 doesn’t offer factory integrated smartphone program access.