Hushed Cabin - 2015 Kia K900 Long-Term Road Test
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2015 Kia K900 Long-Term Road Test

  • Full Review
  • Pricing & Specs
  • Road Tests (2)
  • Comparison
  • Long-Term

2015 Kia K900: Hushed Cabin

September 24, 2014

2015 Kia K900

The interior of our long-term 2015 Kia K900 is quiet, like really quiet. The 5.0-liter V8 gives a good rumble when you give it the beans, but this thing is exceptionally quiet on the highway and in city traffic. In fact, it is one of the quietest cars in our long-term fleet. To see just how quiet it is, I turned to our official testing numbers.

Our old long-term 2013 Tesla Model S and 2014 Ram 1500 Ecodiesel are great at drowning out noise, and I've used them as a benchmark for cabin silence before, but even those two have a hard time competing with this big, buttoned up, luxury sedan. Here's how the K900 stacks up against those models and a couple of other flagships from its upscale competitors:

dB @ Idle dB @ "Full Throttle" dB @ 70 mph
2015 Kia K900 39.3 69.5 59.5
2013 Tesla Model S 36.4 62.5 61.7
2014 Ram 1500 EcoDiesel 41.9 65.1 60.2
2014 Audi A8 4.0T 40.1 68.4 61.8
2014 Mercedes S550 37.5 67.6 60.1

So while the Kia K900 is marginally louder at full throttle than the other big sedans, it's definitely the quietest at highway speeds and that's no small feat when it's up against vehicles that cost nearly twice as much.

Travis Langness, Associate Editor @ 1,341 miles


2015 Kia K900

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  • Full Review
  • Pricing & Specs
  • Road Tests (2)
  • Comparison
  • Long-Term

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