2021 Lexus IS vs 2021 Kia K5

2021 Kia K5
2021 Kia K5
$23,590MSRP
Overview
Overview
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2021 Lexus IS
2021 Lexus IS
$39,050MSRP
Overview
Overview
OverviewShop Now
2021 Kia K5
$23,590MSRP
Overview
Overview
OverviewShop Now
2021 Lexus IS
$39,050MSRP
Overview
Overview
OverviewShop Now

Overview

MSRP

$23,590

MSRP

$39,050

Listings

7

Listings

23

Ratings & Reviews

User Reviews
User Reviews

Expert reviews

7.7 out of 10

Expert reviews

7.3 out of 10

2021 Kia K5 Reviews Summary

Sedans are now the most exciting new cars in the mainstream market. They are to crossovers today what craft beer was in the early 2000s. They’re not on every corner anymore because North Americans prefer trucks over cars, but sedans like the 2021 Kia K5 are refreshing to see, surprisingly good to drive, and will make you look cultured and smart without having to try. The K5—and its new name—replaces the Optima and upgrades nearly everything in the pursuit of style and performance. It’s one of the best midsize sedans out there.

2021 Lexus IS Reviews Summary

The new Lexus IS enters its fourth generation of production, embodying lessons learned from the LC and RC. The 2021 IS targets enthusiast drivers and luxury buyers who might be thinking German first, and it seeks to recalibrate expectations of what a compact luxury sports sedan can be.

Popular Features & Specs

Engine

1.6L 180 hp I4

Engine

2.0L 241 hp I4

Drive Train

FWD

Drive Train

RWD

Seating Capacity

5

Seating Capacity

5

Horsepower

180 hp @ 5500 rpm

Horsepower

241 hp @ 5800 rpm

MPG City

27

MPG City

21

MPG Highway

37

MPG Highway

31
2021 Kia K5
2021 Kia K5
$23,590MSRP
Overview
Overview
OverviewShop Now
2021 Lexus IS
2021 Lexus IS
$39,050MSRP
Overview
Overview
OverviewShop Now
2021 Kia K5
$23,590MSRP
Overview
Overview
OverviewShop Now
2021 Lexus IS
$39,050MSRP
Overview
Overview
OverviewShop Now

Overview

MSRP
$23,590
$39,050
Listings

Ratings & Reviews

User reviews

4.7

4.6

Expert reviews

7.7 out of 10

Read full review

7.3 out of 10

Read full review
Pros & cons
Summary
Sedans are now the most exciting new cars in the mainstream market. They are to crossovers today what craft beer was in the early 2000s. They’re not on every corner anymore because North Americans prefer trucks over cars, but sedans like the 2021 Kia K5 are refreshing to see, surprisingly good to drive, and will make you look cultured and smart without having to try. The K5—and its new name—replaces the Optima and upgrades nearly everything in the pursuit of style and performance. It’s one of the best midsize sedans out there.
The new Lexus IS enters its fourth generation of production, embodying lessons learned from the LC and RC. The 2021 IS targets enthusiast drivers and luxury buyers who might be thinking German first, and it seeks to recalibrate expectations of what a compact luxury sports sedan can be.
Video

Popular Features & Specs

Engine
1.6L 180 hp I4
2.0L 241 hp I4
Drive Train
FWD
RWD
Seating Capacity
5
5
Horsepower
180 hp @ 5500 rpm
241 hp @ 5800 rpm
MPG City
27
21
MPG Highway
37
31
Look and feel

2021 Kia K5

8/10

2021 Lexus IS

8/10

The 2021 Kia K5 represented a significant shift in Kia's design philosophy, moving away from its past of uninspiring sedans. With its fastback form and GT-Line trim, the K5 was reminiscent of the Audi A5 Sportback, thanks to the influence of Peter Schreyer, Kia's chief designer. The K5's exterior was marked by its unique taillights, Z-shaped LED running lights, and a honeycomb grille, giving it a sporty and modern appearance. Despite some fake air vents and exhaust tips, the K5's proportions and design details made it a standout in its class. The interior of the K5 was equally impressive, with a driver-focused layout, quality materials, and a sporty flat-bottom steering wheel. The GT-Line trim featured an 8-inch touchscreen and analog gauges, but the overall feel was upscale, with polished black trim and comfortable seating.

The 2021 Lexus IS made a bold statement with its athletic proportions and elegant design. The sedan's fast roofline and spindle grille with diamond mesh gave it a dynamic and assertive look. The narrow headlights added to its aggressive stance, while the flawless paint and panel gaps showcased Lexus's attention to detail. Inside, the IS featured a simple yet stylish dash, with a centre stack reminiscent of retro hi-fi equipment. The interior design was bold and modern, with high-quality materials and a focus on driver comfort. However, the analog clock felt outdated in the otherwise contemporary cabin. Overall, the IS combined elegance and sportiness, making it a compelling choice for those seeking a luxury sports sedan.

Picture of 2021 Kia K5
Picture of 2021 Kia K5
Picture of 2021 Kia K5
Picture of 2021 Kia K5
Picture of 2021 Kia K5
Picture of 2021 Kia K5
Picture of 2021 Kia K5
Picture of 2021 Kia K5
Picture of 2021 Kia K5
Performance

2021 Kia K5

6/10

2021 Lexus IS

7/10

The 2021 Kia K5, particularly in the GT-Line trim, did not quite deliver the sporty performance its aggressive styling suggested. The suspension was tuned for comfort rather than sportiness, and the Pirelli P Zero All-Season tires struggled in tight turns. The GT trim, however, promised a more engaging drive with a 2.5-litre turbocharged engine producing 290 horsepower and 311 lb-ft of torque. Despite these impressive figures, the power was delivered through a front-wheel-drive system, which could be problematic without a limited-slip differential. The standard engine was a 1.6-litre turbo-four with 180 hp and 195 lb-ft of torque, offering decent performance for everyday driving. Fuel efficiency was a strong point, with an estimated 8.2 L/100 km combined for the base engine.

The 2021 Lexus IS was developed with a focus on delivering a true luxury sports sedan experience. The IS 300 RWD featured a 2.0-litre turbocharged engine with 241 horsepower, while the AWD version had a 3.5-litre V6 producing 260 hp. The IS 350 models, available with AWD in Canada, offered 311 hp from the same V6 engine. The IS's performance was characterized by its crisp and balanced handling, thanks to its double-wishbone front and multi-link rear suspension. Fuel efficiency varied depending on the powertrain, with the IS 300 RWD achieving 9.5 L/100 km combined. The IS's performance credentials were further enhanced by its top speed of 230 km/h and acceleration times ranging from 6.9 seconds to 5.6 seconds for the 0-60 mph sprint.

Form and function

2021 Kia K5

9/10

2021 Lexus IS

7/10

The 2021 Kia K5 offered a spacious interior, with enough headroom and legroom for two adults in the back, despite its sleek profile. The front seats were supportive and comfortable, making long drives enjoyable. The K5's interior was well-designed, with easy-to-use controls and a convenient wireless charging pad for smartphones. The infotainment system was user-friendly, with an optional 10.25-inch display. Trunk space was generous at 434 litres, providing ample room for luggage.

The 2021 Lexus IS focused on driver comfort and functionality, with a well-designed driving position and supportive seats. The F Sport trim's bolstered seats were standard in the IS 350 models, offering heating and ventilation. The IS featured ample storage options, including a spacious glovebox and door pockets. The rear seats were comfortable for two passengers, though legroom was limited. Trunk space was adequate at 305.8 litres, with a deep configuration for added practicality.

Technology

2021 Kia K5

7/10

2021 Lexus IS

7/10

The 2021 Kia K5 came equipped with wireless Apple CarPlay and Android Auto as standard, making it easy to set up and use. The GT-Line trim added features like a panoramic sunroof, adaptive cruise control, and a 10.25-inch infotainment system with Bluetooth and SiriusXM. The K5 also offered Smart Cruise Control, which allowed for semi-automated driving on highways.

The 2021 Lexus IS introduced a touchscreen infotainment system with Android Auto and Apple CarPlay compatibility. Lexus Enform services were included, offering features like Safety Connect and Service Connect with complimentary trial periods. The Mark Levinson 17-speaker audio system was a standout option, providing exceptional sound quality. The IS's technology package was comprehensive, though some features required subscription renewals after the initial trial period.

Safety

2021 Kia K5

8/10

2021 Lexus IS

7/10

The 2021 Kia K5 received top safety ratings from both the NHTSA and IIHS, earning a Top Safety Pick+ designation. Standard safety features included forward collision avoidance, lane-keep assist, and blind-spot monitoring. The K5 also offered rear side airbags and a driver's knee airbag, enhancing its safety credentials.

The 2021 Lexus IS was also rated a Top Safety Pick+ by the IIHS and received a five-star safety rating from the NHTSA. The IS came equipped with Lexus Safety System+ 2.5, which included a pre-collision system, lane-departure warning, and adaptive cruise control. Additional safety features included blind-spot monitoring, a backup camera, and LED lighting.

Cost Effectiveness

2021 Kia K5

undefined/10

2021 Lexus IS

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N/A

CarGurus highlights

Winning Vehicle Image

According to CarGurus experts, the overall rating for the 2021 Kia K5 is 7.7 out of 10, while the 2021 Lexus IS scores 7.3 out of 10. Based on these ratings, the Kia K5 is the recommended choice, offering a better balance of style, technology, and safety features at a competitive price point.

Choose the 2021 Kia K5 if:

7.7of 10overall
  • You prioritize fuel efficiency and a spacious interior.
  • You appreciate modern styling and a user-friendly infotainment system.
  • You value top safety ratings and comprehensive standard safety features.

CarGurus highlights

Winning Vehicle Image

According to CarGurus experts, the overall rating for the 2021 Kia K5 is 7.7 out of 10, while the 2021 Lexus IS scores 7.3 out of 10. Based on these ratings, the Kia K5 is the recommended choice, offering a better balance of style, technology, and safety features at a competitive price point.

Choose the 2021 Kia K5 if:

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7.7of 10overall
  • You prioritize fuel efficiency and a spacious interior.
  • You appreciate modern styling and a user-friendly infotainment system.
  • You value top safety ratings and comprehensive standard safety features.
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By: CarGurus + AI

At CarGurus, our team of experienced automotive writers remain at the heart of our content operation, conducting hands-on car tests and writing insightful guides that are backed by years of industry experience. To complement this, we are harnessing AI to make our content offering more diverse and more helpful to shoppers than ever. To achieve this, our AI systems are based exclusively on CarGurus content, ratings and data, so that what we produce is both unique to CarGurus, and uniquely helpful to car shoppers.

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