2021 Kia Sedona vs. 2020 Toyota Sienna

Detailed Review, Specifications & Comparison

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Safety

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/08/13

The Sedona (except LX)’s optional 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 Sienna doesn’t offer a driver alert monitor.

Both the Sedona and the Sienna 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, electronic stability systems to prevent skidding, rearview cameras, available crash mitigating brakes, lane departure warning systems, blind spot warning systems, around view monitors 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 Kia Sedona is safer than the Toyota Sienna:

Sedona

Sienna

OVERALL STARS

5 Stars

4 Stars

Driver

STARS

5 Stars

5 Stars

Neck Injury Risk

23%

27%

Neck Stress

196 lbs.

260 lbs.

Passenger

STARS

5 Stars

4 Stars

HIC

207

413

Chest Compression

.3 inches

.3 inches

Neck Stress

196 lbs.

218 lbs.

Neck Compression

60 lbs.

80 lbs.

Leg Forces (l/r)

464/103 lbs.

604/305 lbs.

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

A significantly tougher test than their original offset frontal crash test, the Insurance Institute for Highway Safety does 40 MPH small overlap frontal offset crash tests. In this test, where only 25% of the total width of the vehicle is struck, results indicate that the Kia Sedona is safer than the Sienna:

Sedona

Sienna

Overall Evaluation

GOOD

ACCEPTABLE

Restraints

GOOD

ACCEPTABLE

Head Neck Evaluation

GOOD

GOOD

Head injury index

102

119

Peak Head Forces

0 G’s

0 G’s

Steering Column Movement Rearward

2 cm

5 cm

Chest Evaluation

GOOD

GOOD

Hip & Thigh Evaluation

GOOD

GOOD

Femur Force R/L

3.1/.2 kN

4.3/.9 kN

Hip & Thigh Injury Risk R/L

1%/0%

2%/0%

Lower Leg Evaluation

GOOD

GOOD

Tibia index R/L

.53/.46

.54/.34

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 Sedona is safer than the Toyota Sienna:

Sedona

Sienna

Front Seat

STARS

5 Stars

5 Stars

HIC

29

49

Chest Movement

.6 inches

.6 inches

Abdominal Force

98 G’s

144 G’s

Hip Force

253 lbs.

391 lbs.

Rear Seat

STARS

5 Stars

5 Stars

HIC

131

143

Spine Acceleration

46 G’s

52 G’s

Hip Force

660 lbs.

746 lbs.

Into Pole

STARS

5 Stars

5 Stars

Max Damage Depth

15 inches

17 inches

HIC

256

404

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, and with its optional front crash prevention system, the Insurance Institute for Highway Safety grants the Sedona the rating of “Top Pick” for 2017, a rating granted to only 184 vehicles tested by the IIHS. The Sienna was not even a “Top Pick” for 2016.

Warranty

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

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

Reliability

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/08/13

To reliably start during all conditions and help handle large electrical loads, the Sedona has a standard 660-amp battery (850 EX/SX/Limited). The Sienna’s 582-amp battery isn’t as powerful.

J.D. Power and Associates rated the Sedona first among minivans in their 2020 Initial Quality Study. The Sienna isn’t in the top three.

J.D. Power and Associates’ 2020 Initial Quality Study of new car owners surveyed provide the statistics that show that Kia vehicles are better in initial quality than Toyota vehicles. J.D. Power ranks Kia first in initial quality, above the industry average. With 41 more problems per 100 vehicles, Toyota is ranked 19th, below the industry average.

Fuel Economy and Range

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/08/13

The Sedona has 1.1 gallons more fuel capacity than the Sienna (21.1 vs. 20 gallons), for longer range between fill-ups.

Brakes and Stopping

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The Sedona stops much shorter than the Sienna:

Sedona

Sienna

70 to 0 MPH

167 feet

181 feet

Car and Driver

60 to 0 MPH

118 feet

128 feet

Motor Trend

60 to 0 MPH (Wet)

144 feet

156 feet

Consumer Reports

Suspension and Handling

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/08/13

For superior ride and handling, the Kia Sedona has fully independent front and rear suspensions. An independent suspension allows the wheels to follow the road at the best angle for gripping the pavement, without compromising ride comfort. The Toyota Sienna has a rear torsion beam axle, with a semi-independent rear suspension.

The Sedona EX/SX has vehicle speed sensitive variable-assist power steering, for low-effort parking, better control at highway speeds and during hard cornering, and a better feel of the road. The Sienna doesn’t offer variable-assist power steering.

For a smoother ride and more stable handling, the Sedona’s wheelbase is 1.2 inches longer than on the Sienna (120.5 inches vs. 119.3 inches).

For better handling and stability, the average track (width between the wheels) on the Sedona is .9 inches wider in the front and 1.2 inches wider in the rear than the track on the Sienna.

Passenger Space

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/08/13

The Sedona has .4 inches more front legroom, .7 inches more front hip room, 3.5 inches more rear legroom and .6 inches more third row headroom than the Sienna.

Cargo Capacity

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The Sedona’s cargo area provides more volume than the Sienna.

Sedona

Sienna

Second Seat Folded

142 cubic feet

117.8 cubic feet

The Sedona’s cargo area is larger than the Sienna’s in almost every dimension:

Sedona

Sienna

Length to seat (3rd/2nd/1st)

22.5”/55.3”/91”

23.5”/54”/74”

Max Width

50”

51.5”

Min Width

48”

47.5”

Height

45.1”

45”

To make loading groceries and cargo easier when your hands are full, the Sedona’s liftgate can be opened just by waiting momentarily behind the back bumper, leaving your hands completely free. The Sienna doesn’t offer a hands-free gesture to open its liftgate, forcing you to put cargo down if your hands are full.

Payload

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/08/13

The Sedona has a much higher standard payload capacity than the Sienna AWD (1674 vs. 1210 lbs.).

The Sedona has a much higher optional payload capacity than the Sienna (1674 vs. 1380 lbs.).

Ergonomics

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/08/13

The Sedona’s power window, power lock, power mirror and cruise control switches are lit from behind, making them plainly visible and easier to operate at night. The Sienna’s power lock, power mirror and cruise control switches are unlit, making them difficult to find at night and operate safely.

To help drivers see further while navigating curves, the Sedona (except LX) has standard adaptive headlights to illuminate around corners automatically by reading vehicle speed and steering wheel angle. The Sienna doesn’t offer cornering lights.

Optional air-conditioned seats in the Sedona (except LX) keep the driver and front passenger comfortable and take the sting out of hot seats in Summer. The Sienna doesn’t offer air-conditioned seats.

To quickly and conveniently keep personal devices charged without cables tangling and wearing out, the Kia Sedona EX/SX has a standard wireless phone charging system (Qi) in the center console. The Sienna doesn’t offer wireless personal charging.

Economic Advantages

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/08/13

Insurance will cost less for the Sedona owner. The Complete Car Cost Guide estimates that insurance for the Sedona will cost $450 less than the Sienna over a five-year period.

According to The Car Book by Jack Gillis, the Sedona is less expensive to operate than the Sienna because it costs $127 less to do the manufacturer’s suggested maintenance for 50,000 miles. Typical repairs cost much less on the Sedona than the Sienna, including $232 less for a water pump, $4 less for a muffler, $303 less for a starter, $102 less for fuel injection, $289 less for a fuel pump, $643 less for a timing belt/chain and $303 less for a power steering pump.

Recommendations

© 1999 - 2020 Advanta-STAR Automotive Research. All rights reserved. This vehicle comparison and all of the content in it are provided only by license from Advanta-STAR Automotive Research Corporation of America. If you are not a legally licensed user of this vehicle comparison, it is against federal law to access it, copy it, forward it or use it in any manner whatsoever. Any unauthorized use of this vehicle comparison is a violation of U.S. and international law and is punishable criminally and civilly. 6IUEX-0KENZ 45.55.47.189 2020/08/13

Motor Trend performed a comparison test in its March 2015 issue and they ranked the Kia Sedona SX first. They ranked the Toyota Sienna SE third.

© 1991-2018 Advanta-STAR Automotive Research. All rights reserved.

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