Kia has unveiled detailed NVH engineering behind its new EV2, a B-segment electric SUV designed, developed, and produced in Europe. The company says it prioritized cabin acoustic refinement to address noise challenges unique to electric vehicles, where the absence of engine sound exposes road, wind, and component noise.
Highlights
- Simulation-first approach: Kia’s European technical center used numerical simulations and dyno-based testing to identify and address noise sources early in development.
- Acoustic hardware: The EV2 features acoustic tires, laminated door glass, and an acoustic windscreen to reduce road and wind noise at highway speeds.
- EV-specific sound management: A dedicated sound package targets high-frequency tonal noise from the inverter and DC/DC converter.
- Two battery options: The EV2 offers 42.2 kWh and 61.0 kWh packs with estimated WLTP ranges of 317 km and 453 km, respectively.
Why NVH Matters More in EVs
Without a combustion engine to mask background sounds, small high-frequency vibrations and road noise become more noticeable in electric vehicles. Kia says this shift in the acoustic environment makes NVH tuning a higher priority for perceived quality.
“EVs change what customers notice first; without a petrol or diesel engine covering up the background noise, small high-frequency sounds and vibrations stand out immediately,” said Pablo Martínez Masip, Vice President Product, Brand & Customer Experience at Kia Europe. “The EV2 behaves calm at higher speed, controlled on rough roads, and consistent every day, so the car feels refined from the first kilometre.”
Simulation-Led Development
Hyundai Motor Europe Technical Centre (HMETC) led the NVH program. Engineers used advanced numerical simulations from the earliest stages to predict road noise issues, particularly at higher speeds.
Dyno-based testing provided repeatable measurements in a controlled environment. This approach allowed engineers to isolate specific frequencies and implement targeted fixes without the variability of real-world road surfaces and weather conditions.
“We treated the EV2’s NVH development as a system,” said Oliver Jung, Lead Engineer at HMETC. “Early simulations helped us identify where road and wind noise could disrupt the cabin. Next to that, dyno-based testing gave us repeatable data to validate every countermeasure.”
Acoustic Hardware Package
The EV2 uses several hardware-level countermeasures to reduce cabin noise:
- Acoustic tires: Designed to minimize tonal intrusion from road contact
- Acoustic door glass and windscreen: Laminated glass reduces wind turbulence noise at motorway speeds (acoustic door glass available on GT-Line and above)
- Carpet and wheel arch absorbers: Specially developed to lower perceived sound levels
- Dash inner insulation and frunk absorber: Target high-frequency noise from EV-specific components such as the inverter and DC/DC converter
- Optimized underbody cover: Reduces transmission of high-frequency sound into the cabin
Together, these elements form what Kia describes as a coherent acoustic profile across driving conditions.
Warning Sound and Safety Tuning
The EV2’s pedestrian warning sound was designed to alert road users while remaining unobtrusive for occupants. Additionally, the Intelligent Speed Limit Assist (ISLA) alert tone was tuned to deliver clear guidance without becoming irritating over time.
Battery and Charging Specs
The EV2 launches with two battery configurations. The 42.2 kWh standard-range version is currently in production. The 61.0 kWh long-range version and GT-Line trim enter production in June 2026.
Charging supports 400V DC fast charging along with 11 kW and 22 kW AC options. Features include EV route planning, Plug & Charge, and bidirectional charging capability. Interior highlights include triple-screen displays, over-the-air updates, flexible rear seats, and up to 362 liters of cargo space.
Official WLTP range figures are pending final homologation.
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