2021 KIA K5 next to a new Hyundai Sonata

The 2021 Kia K5 Optima is coming with lots of new changes, while the 2021 Hyundai Sonata isn't set to gain a lot of new equipment. However, these two models deserve a complete 2021 Kia K5 Optima vs. Hyundai Sonata comparison. This K5 vs. Sonata evaluation looks at pricing, performance, features, and more.

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Price | 2021 Kia K5 vs. Hyundai Sonata

The 2021 Kia K5 offers a reasonable starting price, most likely being around the mid-$20,000 to get behind a base model wheel. We expect that the new 2021 Hyundai Sonata MSRP might be around $25,000 as well.

Highlighted Changes | 2021 Kia K5 vs. Hyundai Sonata

The biggest highlight with the new Optima is the upgraded name. It will now be known as the 2021 Kia K5 instead. The Hyundai Sonata was just updated in 2020, so there isn't a lot expected with the 2021 Sonata models.

Cost per Year | New Kia K5 (Optima) vs. Hyundai Sonata

We don't have pricing on the new models yet but can look at estimates from previous years. Edmunds states that the 2020 Kia Optima LX cost $22,186, but the true cost to own is rated at $34,510. Edmunds also rates the 2020 Hyundai Sonata S with a cost of $22,979, but the true cost is listed as $33,673. Both of these vehicles seem to be comparable.

Miles Per Gallon | 2021 Kia K5 vs. Hyundai Sonata

The new 2021 Kia K5 doesn't have EPA estimates yet, but we can compare it to the 2020 Kia Optima, which is rated at 24/32 mpg with front-wheel-drive. Additionally, the 2021 Hyundai Sonata should be similar to the 2020 models at 28/38 mpg.

Interior dashboards of the new KIA K5 and the Hyundai Sonata

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Fuel Tank Capacity | Kia K5 (Optima) vs. Hyundai Sonata

The 2021 Kia K5 is expected to have a 15.8-gallon fuel tank, while the 2021 Hyundai Sonata should have an 18.5-gallon tank, as the 2020 model does.

AWD | Kia K5 (Optima) vs. Hyundai Sonata

The 2021 Kia K5 Optima is scheduled to arrive with an all-wheel-drive option. Additionally, the 2021 Hyundai Sonata might also offer an all-wheel-drive with the N Line trim.

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Trim Levels | Kia K5 (Optima) vs. Hyundai Sonata

The 2021 Kia K5 Optima comes in four trim levels. We don't know the exact pricing yet but can compare it to the previous models.

  • LX |$24,115
  • S |$25,615
  • EX |$27,915
  • SX |$32,915

The 2021 Hyundai Sonata is adding the N Line trim level, with pricing comparable to the 2020 models (listed below).

  • SE |$23,400
  • SEL |$25,500
  • SEL Plus | $27,400
  • Limited | $33,300
  • N Line | (unknown)

Interior | 2021 Kia K5 vs. Hyundai Sonata

The 2021 K5 comes with many amenities and a luxury cabin. You can equip it with ambient lighting, a 10.3-inch touchscreen, a 12.3-inch digital gauge cluster, Apple CarPlay, and Android Auto. In comparison, the new Sonata only comes standard with an infotainment system, an eight-inch touch screen, Android Auto, Apple CarPlay, and Bluetooth.

Interior comparison of the 2021 KIA K5 and the new Hyundai Sonata

Seating | Kia K5 (Optima) vs. Hyundai Sonata

Both the 2021 Kia K5 and Hyundai Sonata have room to hold five occupants comfortably.

Cargo Space | Kia K5 (Optima) vs. Hyundai Sonata

Additionally, both the Kia K5 and Hyundai Sonata feature a trunk space that measures around 16 cubic feet. This is above average for the midsize car class.

Exterior | 2021 Kia K5 (Optima) vs. Hyundai Sonata

While we don't know the exact 2021 Kia K5 dimensions yet, we know some changes. The previous model measures 191″ L x 73″ W x 58″ H, but the new K5 will be an inch wider, an inch lower and two inches longer. It also features a 112.2-inch wheelbase and can be purchased with 16-, 17- or 18-inch wheels. The 2021 Hyundai Sonata dimensions should continue to measure around 193″ L x 73″ W x 57″ H. The automaker is adding a 19-inch wheel option for some models.

Rear views of the all new KIA K5 compared to the Hyundai Sonata

Upgraded Technology & Features | Kia K5 Optima vs. Hyundai Sonata

The main focus of the Kia K5 upgrade is to the exterior features and dimensions. However, there will be more standard technology, and some luxury features added. In comparison, there aren't many interior upgrades with the 2021 Hyundai Sonata models, since it recently received a redesign. The biggest changes are some additional standard safety features.

Buy a New 2021 Kia K5 (Optima) in Colorado Springs

At Phil Long Kia, we have the new Optima models you want to drive. Check out the Optima inventory online, without ever leaving your home or office.

Buy A New Kia K5 or Optima

Buy a Used Kia Optima or Hyundai Sonata

You can also find a nice selection of pre-owned Optimas or Sonatas at our location. Check the inventory often to see what's new before these inspected models sell.

Buy A Used Kia Optima Now

Buy A Used Hyundai Sonata

Lease a Kia Optima

Additionally, you can save money by leasing a new Kia. Talk to our team about the Kia lease deals available to you. You will be required to pay far less down, and your monthly fees will be lower, which keeps more money in your pocket.

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