Ancira Nissan Compares 2018 Nissan Altima VS 2017 Mazda 6 Near San Antonio, TX

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2018 Nissan Altima

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2017 Mazda 6

Safety Comparison

The Altima 3.5 SL has standard Front and Rear Sonar Sensors to help warn the driver about vehicles, pedestrians or other obstacles behind or in front of their vehicle. The Mazda 6 doesn’t offer a front parking aid.

Compared to metal, the Altima’s plastic fuel tank can withstand harder, more intrusive impacts without leaking; this decreases the possibility of fire. The Mazda 6 has a metal gas tank.

Both the Altima and the Mazda 6 have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front seatbelt pretensioners, front-wheel drive, height-adjustable front shoulder belts, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, rearview cameras, available daytime running lights, blind spot warning systems 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 is safer than the Mazda 6:



Mazda 6




5 Stars

5 Stars

Neck Injury Risk



Neck Stress

216 lbs.

266 lbs.

Leg Forces (l/r)

32/46 lbs.

43/70 lbs.




4 Stars

4 Stars




Neck Injury Risk



Neck Stress

113 lbs.

133 lbs.

Neck Compression

62 lbs.

107 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 flat barrier at 38.5 MPH and into a post at 20 MPH, results indicate that the Nissan Altima is safer than the Mazda 6:



Mazda 6


Rear Seat


5 Stars

5 Stars




Spine Acceleration

58 G’s

64 G’s


Into Pole


5 Stars

5 Stars




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

Warranty Comparison

There are over 77 percent more Nissan dealers than there are Mazda dealers, which makes it much easier should you ever need service under the Altima’s warranty.

Reliability Comparison

To reliably power the ignition and other systems and to recharge the battery, the Altima has a standard 110-amp alternator. The Mazda 6’s standard 100-amp alternator isn’t as powerful.

J.D. Power and Associates rated the Altima third among midsize cars in their 2017 Initial Quality Study. The Mazda 6 isn’t in the top three.

J.D. Power and Associates’ 2017 Initial Quality Study of new car owners surveyed provide the statistics that show that Nissan vehicles are better in initial quality than Mazda vehicles. J.D. Power ranks Nissan 10th in initial quality, above the industry average. With 32 more problems per 100 vehicles, Mazda is ranked 27th, below the industry average.

Engine Comparison

The Altima 3.5’s standard 3.5 DOHC V6 produces 86 more horsepower (270 vs. 184) and 66 lbs.-ft. more torque (251 vs. 185) than the Mazda 6’s 2.5 DOHC 4 cyl.

As tested in Motor Trend the Nissan Altima is faster than the Mazda 6 (automatics tested):


Altima 2.5

Altima 3.5

Mazda 6

Zero to 60 MPH

7.4 sec

5.9 sec

7.7 sec

Zero to 80 MPH

12.5 sec


13.2 sec

Passing 45 to 65 MPH

3.8 sec


4 sec

Quarter Mile

15.7 sec

14.2 sec

16 sec

Speed in 1/4 Mile

89.2 MPH

101.7 MPH

87.9 MPH

Fuel Economy and Range Comparison

On the EPA test cycle the Altima 2.5 gets better fuel mileage than the Mazda 6 Auto (27 city/38 hwy vs. 26 city/35 hwy).

The Altima has 1.6 gallons more fuel capacity than the Mazda 6 (18 vs. 16.4 gallons), for longer range between fill-ups.

Brakes and Stopping Comparison

The Altima stops shorter than the Mazda 6:



Mazda 6


60 to 0 MPH

123 feet

124 feet

Motor Trend

Tires and Wheels Comparison

For better traction, the Altima 2.5 SR/3.5’s tires are larger than the largest tires available on the Mazda 6 (235/45R18 vs. 225/55R17).

The Altima 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 Mazda 6 doesn’t offer vehicle monitored tire inflation.

Suspension and Handling Comparison

The Altima 3.5 SL handles at .87 G’s, while the Mazda 6 Grand Touring pulls only .83 G’s of cornering force in a Road and Track skidpad test.

The Altima 3.5 SL executes Motor Trend’s “Figure Eight” maneuver quicker than the Mazda 6 Touring (27.1 seconds @ .66 average G’s vs. 27.6 seconds @ .62 average G’s).

Chassis Comparison

To almost totally eliminate engine vibration in the passenger area, the Altima V6 has an electronically controlled liquid-filled front engine mount and conventional liquid-filled engine mounts (standard liquid front mount on other versions of the Altima). A computer-controlled electric current in the liquid changes its viscosity, allowing the mount to dampen the engine completely at all RPMs. The Mazda 6 uses conventional solid rubber engine mounts.

As tested by Car and Driver, the interior of the Altima 2.5 SV is quieter than the Mazda 6 Grand Touring:



Mazda 6

At idle

38 dB

42 dB


75 dB

80 dB

70 MPH Cruising

69 dB

69 dB

Passenger Space Comparison

The Altima has 2.2 cubic feet more passenger volume than the Mazda 6 (101.9 vs. 99.7).

The Altima has 1.6 inches more front headroom, 2.8 inches more front legroom and .9 inches more rear shoulder room than the Mazda 6.

Cargo Capacity Comparison

The Altima has a larger trunk than the Mazda 6 (15.4 vs. 14.8 cubic feet).

A low lift-over trunk design makes loading and unloading the Altima easier. The Altima’s trunk lift-over height is 26.5 inches, while the Mazda 6’s liftover is 28.5 inches.

With its sedan body style, valet key, locking rear seatbacks and remote trunk release lockout, the Altima offers cargo security. The Mazda 6’s non-lockable remote release defeats cargo security.

A standard locking glovebox (which can’t be accessed with the valet key) keeps your small valuables safer in the Altima. The Mazda 6 doesn’t offer locking storage for small valuables.

Ergonomics Comparison

If the front windows are left down on the Altima the driver can raise them using the key in the outside lock cylinder. On a hot day the driver can lower the windows from outside the vehicle using the key in the outside lock cylinder or the keyless remote. The driver of the Mazda 6 can only operate the windows from inside the vehicle, with the ignition on.

The Altima’s speed-sensitive wipers speed up when the vehicle does, so that the driver doesn’t have to continually adjust the speed of the wipers. The Mazda 6 Sport’s standard manually variable intermittent wipers have to be constantly adjusted.

The Altima has a standard automatic headlight on/off feature. When the ignition is on, the headlights automatically turn on at dusk and off after dawn. When the ignition turns off, the headlights turn off after a delay timed to allow you to securely get to your front door. The Mazda 6 has an automatic headlight on/off feature standard only on the Touring/Grand Touring.

Economic Advantages Comparison

Insurance will cost less for the Altima owner. The Car Book by Jack Gillis rates the Altima with a number “1” insurance rate while the Mazda 6 is rated higher at a number “5” rate.

According to The Car Book by Jack Gillis, the Altima is less expensive to operate than the Mazda 6 because typical repairs cost less on the Altima than the Mazda 6, including $36 less for front brake pads, $86 less for a fuel pump and $4 less for a power steering pump.

Recommendations Comparison

J.D. Power and Associates rated the Altima first among midsize cars in owner reported satisfaction. This includes how well the vehicle performs and satisfies its owner’s expectations. The Mazda 6 isn’t in the top three.

Strategic Vision rates overall owner satisfaction with vehicle quality. The Nissan Altima is ranked third in the Mid-Size Car category. The Mazda 6 is ranked below average.

The Nissan Altima outsold the Mazda 6 by almost seven to one during the 2016 model year.

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