Son's Automotive Group Compares 2015 Kia Optima VS 2015 Honda Accord Near Buford, GA

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2015 Kia Optima

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2015 Kia Optima

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2015 Honda Accord

Safety Comparison

To help make backing safer, the Optima EX/SX’s optional 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 Accord Sedan doesn’t offer a cross-path warning system.

Both the Optima and the Accord Sedan 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, plastic fuel tanks, four-wheel antilock brakes, traction control and electronic stability systems to prevent skidding.

The National Highway Traffic Safety Administration does 35 MPH front crash tests on new vehicles. In this test, results indicate that the Kia Optima is safer than the Honda Accord Sedan:


Accord Sedan


5 Stars

4 Stars



5 Stars

4 Stars

Neck Injury Risk



Neck Stress

221 lbs.

236 lbs.

Neck Compression

33 lbs.

89 lbs.



5 Stars

4 Stars




Chest Compression

.5 inches

.7 inches

Neck Stress

161 lbs.

163 lbs.

Neck Compression

29 lbs.

47 lbs.

Leg Forces (l/r)

259/74 lbs.

535/546 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 Kia Optima is safer than the Honda Accord Sedan:


Accord Sedan

Rear Seat


5 Stars

5 Stars




Spine Acceleration

68 G’s

72 G’s

Hip Force

497 lbs.

765 lbs.

Into Pole


5 Stars

5 Stars

Max Damage Depth

16 inches

16 inches




Spine Acceleration

40 G’s

49 G’s

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

Warranty Comparison

The Optima comes with a full 5 year/60,000 mile basic warranty, which covers the entire car and includes 24 hour roadside assistance. The Accord Sedan’s 3 year/36,000 mile basic warranty expires 2 years and 24,000 miles sooner.

Kia’s powertrain warranty covers the Optima 5 years and 40,000 miles longer than Honda covers the Accord Sedan. Any repair needed on the engine, transmission, axles, joints or driveshafts is fully covered for 10 years or 100,000 miles. Coverage on the Accord Sedan ends after only 5 years or 60,000 miles.

Reliability Comparison

To reliably start during all conditions and help handle large electrical loads, the Optima has a standard 600-amp battery. The Accord Sedan’s 550-amp battery isn’t as powerful.

J.D. Power and Associates’ 2014 Initial Quality Study of new car owners surveyed provide the statistics that show that Kia vehicles are better in initial quality than Honda vehicles. J.D. Power ranks Kia 6th in initial quality, above the industry average. With 2 more problems per 100 vehicles, Honda is ranked 8th.

Engine Comparison

The Optima has more powerful engines than the Accord Sedan:



Optima 2.4 DOHC 4 cyl.

192 HP

181 lbs.-ft.

Optima SX Turbo/SXL Turbo 2.0 4 cyl.

274 HP

269 lbs.-ft.

Accord Sedan 2.4 DOHC 4 cyl.

185 HP

181 lbs.-ft.

Accord Sedan Sport 2.4 DOHC 4 cyl.

189 HP

182 lbs.-ft.

Accord Sedan EX-L V6/Touring 3.5 SOHC V6

278 HP

252 lbs.-ft.

As tested in Road & Track the Optima Turbo is faster than the Accord Sedan Sport 4 cyl. (automatics tested):


Accord Sedan

Zero to 60 MPH

6.1 sec

7.6 sec

Quarter Mile

14.5 sec

16.1 sec

Speed in 1/4 Mile

99.4 MPH

91 MPH

Fuel Economy and Range Comparison

The Optima has 1.3 gallons more fuel capacity than the Accord Sedan (18.5 vs. 17.2 gallons), for longer range between fill-ups.

Brakes and Stopping Comparison

For better stopping power the Optima’s brake rotors are larger than those on the Accord Sedan:


Optima SX

Accord Sedan LX

Accord Sedan Sport/EX/Touring

Front Rotors

11.8 inches

12.6 inches

11.1 inches

11.5 inches

Rear Rotors

11.2 inches

11.2 inches

11.1 inches

11.1 inches

The Optima stops shorter than the Accord Sedan:


Accord Sedan

70 to 0 MPH

183 feet

184 feet

Car and Driver

60 to 0 MPH

124 feet

128 feet

Motor Trend

60 to 0 MPH (Wet)

144 feet

150 feet

Consumer Reports

Suspension and Handling Comparison

The Optima SX handles at .80 G’s, while the Accord Sedan EX-L pulls only .77 G’s of cornering force in a Motor Trend skidpad test.

The Optima SX executes Motor Trend’s “Figure Eight” maneuver 1 seconds quicker than the Accord Sedan EX-L (27.4 seconds @ .63 average G’s vs. 28.4 seconds @ .54 average G’s).

For better maneuverability, the Optima’s turning circle is 2.3 feet tighter than the Accord Sedan’s (35.8 feet vs. 38.1 feet). The Optima’s turning circle is 3.8 feet tighter than the Accord Sedan Sport’s (35.8 feet vs. 39.6 feet).

Chassis Comparison

As tested by Car and Driver, the interior of the Optima EX is quieter than the Accord Sedan EX-L:


Accord Sedan

At idle

36 dB

43 dB


74 dB

81 dB

70 MPH Cruising

68 dB

68 dB

Passenger Space Comparison

The Optima has .9 inches more front headroom, 3 inches more front legroom and .1 inches more rear headroom than the Accord Sedan.

Cargo Capacity Comparison

The Optima’s standard folding rear seats are split to accommodate bulky cargo. The Accord Sedan’s standard single piece folding rear seat is not as flexible; long cargo and a passenger can’t share the rear seat.

Ergonomics Comparison

The Optima (except LX)’s optional easy entry system glides the driver’s seat back when the door is unlocked or the ignition is switched off, making it easier for the driver to get in and out. The Accord Sedan doesn’t offer an easy entry system.

The Optima’s standard outside mirrors include heating elements to clear off the mirrors for better visibility. Honda only offers heated mirrors on the Accord Sedan EX/EX-L/Touring.

Both the Optima and the Accord Sedan offer available heated front seats. The Optima EX/SX also offers optional heated rear seats to keep those passengers extremely comfortable in the winter. Heated rear seats aren’t available in the Accord Sedan.

The Optima EX/SX’s optional air conditioned front seats cool the driver and front passenger and help take the sting out of hot leather in Summer. The Accord Sedan doesn’t offer air conditioned front seats.

On extremely cold Winter days, the Optima’s optional (except LX) heated steering wheel provides comfort, allowing the driver to steer safely and comfortably before the car heater warms up. The Accord Sedan doesn’t offer a heated steering wheel.

Economic Advantages Comparison

Insurance will cost less for the Optima owner. The Car Book by Jack Gillis rates the Optima with a number “3” insurance rate while the Accord Sedan is rated higher at a number “8” rate.

According to The Car Book by Jack Gillis, the Optima is less expensive to operate than the Accord Sedan because it costs $126 less to do the manufacturer’s suggested maintenance for 50,000 miles. Typical repairs cost much less on the Optima than the Accord Sedan, including $244 less for a starter and $41 less for a fuel pump.

Recommendations Comparison

Consumer Reports® recommends both the Kia Optima and the Honda Accord Sedan, based on reliability, safety and performance.

Motor Trend performed a comparison test in its July 2014 issue and they ranked the Kia Optima EX two places higher than the Honda Accord Sedan Sport.

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

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