VoltRoar

Drive electric.Hear the passion.

Give your EV an engine sound that changes with your speed in real time. Runs right in your car's browser.

  • Runs in the browser: No app to install: just open the site in your car's browser.
  • Follows your speed: Revs and gear changes are worked out live from your GPS speed.
  • Stays on your device: Your location is only used on your device to work out speed. Nothing is uploaded.

19 engines, all synthesized live in your car

Each has its own cylinder count, redline, gearing and crackle off throttle. Tap one on the drive page to hear it.

Car models

  • D1

    Single-Cylinder TractorRecorded

    Recorded from a real tractor: a single-cylinder diesel thumping away on its heavy flywheel, with its own start and stop.

  • 911

    Porsche 911 GT39,000 rpm

    4.0 L naturally aspirated flat-six with a 9,000 rpm redline: a sharp metallic howl up top and crisp PDK shifts.

  • M4

    BMW M4

    S58 3.0 L twin-turbo inline-six: smooth and strong, a turbo shove in the midrange and a deep crackle off throttle.

  • RS7

    Audi RS7

    4.0 TFSI twin-turbo V8: the deep rumble of a cross-plane crank and nonstop crackles off throttle with the sport exhaust.

  • GTI

    VW Golf GTI

    EA888 2.0T inline-four: turbo hiss, blow-off chatter and the signature DSG "fart" on every upshift.

  • R8

    Audi R8 V10NA

    5.2 L naturally aspirated V10 with an 8,700 rpm redline: intake roar and a soaring ten-cylinder shriek.

  • AMG

    Mercedes-AMG GTAngry

    M178 4.0 L twin-turbo V8: a thick low-end roar and volleys of backfire off throttle.

  • 5.0

    Ford Mustang GTMuscle

    5.0 L Coyote naturally aspirated V8: the classic American muscle-car lope at idle and a rough-edged bellow.

  • SUPRA

    Toyota GR Supra

    3.0 L single-turbo inline-six: smooth and linear, with strings of crackles off throttle in sport mode.

  • GT-R

    Nissan GT-R

    VR38DETT 3.8 L twin-turbo V6: loud turbo whoosh and blow-off, and brutal dual-clutch shifts.

Engine styles

  • V8

    V8 MuscleClassic

    The uneven low-frequency rumble of a cross-plane crank: a lumpy idle and heavy low-end torque.

  • V8 SC

    Supercharged V8Angry

    Supercharger whine over a gritty V8 roar: floor it and it explodes.

  • GT

    V8 GT Racer

    Flat-plane V8: shrill at high revs, snappy shifts and race-track backfire.

  • V10

    High-revving V10

    Soaring, clear and precise: the higher the revs, the more it screams.

  • V12

    V12 SupercarFlagship

    Twelve-cylinder smoothness and hysteria: a high-pitched symphony to 9,000 rpm.

  • V6 TT

    Twin-turbo V6

    Whistling turbos as they spool, blow-off valves on lift: fierce and high-tech.

  • I4 T

    Turbo Four Hot Hatch

    A small turbocharged engine: intake hiss, blow-off chatter and crackling shifts.

  • B4

    Boxer Four

    The distinctive burble of unequal-length headers: a taste of rally.

  • FX

    Future TurbineNo gears

    A floating, synthesizer-like turbine that rises steadily with speed, without gear changes.

How to use it

  1. 1

    Open the site

    Open VoltRoar in your car's browser.

  2. 2

    Pick a sound

    Choose an engine, then set the volume, intensity and tone.

  3. 3

    Allow location

    The browser asks for your location. It is only used to work out your speed.

  4. 4

    Start the engine

    Tap START and the sound follows the way you drive.

Where the sound comes from

Revs and gear changes are worked out from the measured speed and acceleration; no vehicle data is read. Floor it and the sound turns fierce, lift off and it crackles, and it blips the throttle on downshifts.

Start the engine →