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Car #1
Make
Model
Variant
Engine
Car #2
Make
Model
Variant
Engine

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2009. - 2013.
D - Large family car
sedan, 4 door
rear
Badges
Production
Vehicle class
Body style
Wheel drive
Safety
2010. - 2015.
D - Large family car
sedan, 4 door
front

Marketing

Dimensons & Outlines

4585 mm
1800 mm
1440 mm
398 liters
398 liters
65 liters
Length
Width
Height
Boot (min)
Boot (max)
Fuel tank
4845 mm
1830 mm
1455 mm
505 liters
505 liters
70 liters
2009 Lexus IS
2010 KIA Optima

Engine

Petrol
6 - V config, 4 valves per cylinder
Nat. Asp.
2499 cc
207 hp
252 Nm
Engine
Fuel
Configuration
Aspiration
Displacement
Power
Torque
Petrol
4 - Inline, 4 valves per cylinder
Nat. Asp.
2359 cc
175 hp
227 Nm

Performance (manual gearbox)

manual gearbox - 6 gears
1535 kg
8.1 s
230 km/h
13.5 l/100km
7.7 l/100km
9.8 l/100km
231 g/km
Gearbox type
Vehicle weight
Acc. 0-100
Top speed
Cons. (urban)
Cons. (highway)
Cons. (average)
CO2 emissions
 
kg
s
km/h
l/100km
l/100km
l/100km
g/km

Performance (automatic gearbox)

automatic - 6 gears
1535 kg
8.5 s
225 km/h
11.8 l/100km
6.5 l/100km
8.4 l/100km
194 g/km
Gearbox type
Vehicle weight
Acc. 0-100
Top speed
Cons. (urban)
Cons. (highway)
Cons. (average)
CO2 emissions
automatic - 6 gears
1562 kg
9.2 s
190 km/h
5.9 l/100km
5.0 l/100km
5.1 l/100km
119 g/km

Expenses

7000 EUR
Price from
8500 EUR

Virtual Adviser's™ opinion

Overview

Two significantly similar cars, no doubt about that. Still, each one has something different to offer. Having both cars powered by petrol engines and utilizing the 4-door sedan body style within the same 'Large family car' segment, the only major difference here really is their wheel drive configuration (rear for the Lexus and front in the case of the KIA). The first one has a Toyota-engineered powertrain under the hood, a 6-cylinder, 24-valves 207hp unit, while the other one gets its power and torque from a 4-cylinder, 16-valves 175hp engine designed by Hyundai.

Safety

The fact that the Lexus got tested by the European New Car Assessment Programme (Euro NCAP), while the other contender didn't, puts it sky-high safety-wise, in my eyes at least. Moving further on, let's take a closer look at some additional safety-related facts. Both vehicles belong to the large family car segment, which is generally a good thing safety-wise, but it doesn't do much to help us decide between the two. On the other hand, if we'd like to consider vehicle mass in this context too, which we definitely should, the Korean car offers a marginal difference of 2% more metal.

Reliability

Manufacturers have been building their reliability reputation for decades now and, generally speaking, it appears that Lexus does have a slight advantage, at least on all of the models level. These are the official statistics, while our visitors describe reliability of Lexus with an average rating of 4.9, and models under the KIA badge with 4.6 out of 5. Unfortunatelly, I don't have enough insight that would allow me to comment in more details on the specific models level. Above it all, drivers of cars with the same engine as the Japanese car rank it on average as 5.0 out of 5, exactly the same as the other one.

Performance & Fuel economy

Lexus is undoubtly more agile, reaching 100km/h in 1.1 seconds less than its competitor. In addition to that it accelerates all the way to 230 kilometers per hour, 40km/h more than the other car. When it comes to fuel economy an obvious choice would be the Korean car, averaging around 5.1 liters of fuel per 100 kilometers (55 mpg), in combined cycle. That's 92% difference compared to the Japanese car!


Verdict

Lexus appears just a bit more reliable, although the difference is truly marginal. The most important thing when deciding between any two vehicles should always be safety, both passive and active. In my opinion, everything taken into account, the Japanese car beats the other contender by far, making it the best choice without even considering other things. It all continues in the same direction, with Lexus being considerably quicker, thus putting more smile on driver's face. It does come at a cost though, and that's the fuel consumption... No mistake, whatever you decide here, but I'd still go for the Lexus. Anyway, that's the most objective conclusion I could've came up with and it's based solely on the information found on this website. Aspects such as design, practicality, brand value and driving experience are there for you to measure them out. Also, you could use the oportunity to find out which car, everything taken into account, would be the perfect choice for you in the eyes of the virtual adviser, out of 12.000+ vehicles we currently have in our database.

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