What is GatiMotor?
GatiMotor is an engine sound simulator for electric cars. It measures your speed using your phone's GPS, then synthesises a combustion engine in real time whose revs follow your driving. Everything runs in the browser, with nothing to install and no account.
How it works
- Open the site on your car's screen or on your phone, then allow location access.
- Pick one of the twenty-six engines.
- Drive. The gearbox shifts, the exhaust opens under acceleration and bangs on downshifts.
The twenty-six engines
Fifteen combustion engines: crossplane V8, flat-plane V8, V12, V10, flat-six, five-cylinder turbo, four-cylinder turbo, V-twin, four-cylinder diesel, straight-six truck diesel, single cylinder, two-stroke, twin-rotor rotary and a radial aero engine. Eleven silly ones: bubbles, spring, choir, turbine, fart, duck, goat, cow, gallop, laser and kazoo.
Computed sound, never recorded
No audio samples are used. For each cylinder bank, GatiMotor builds the waveform of a complete engine cycle — 720 degrees of crankshaft — by placing a combustion pulse at every real firing angle. A Fourier transform turns it into a 96-harmonic wave, and the oscillator runs at one hundred and twentieth of the engine speed. That is why the crossplane V8 burbles on its own: its banks fire at uneven intervals, 180-270-180-90 degrees.
Frequently asked questions
Do I need to install an app?
No. GatiMotor is a website: it opens in your car's or phone's browser. You can add it to your home screen, but nothing gets installed.
Can the sound be heard outside the car?
No. The sound comes from the cabin speakers and stays inside. Your vehicle's mandatory pedestrian warning sound is produced by the car itself and is unaffected.
Are my journeys recorded?
No. Your position is used only to compute the revs, inside the browser. It is never sent anywhere and nothing is stored.
Does GatiMotor work on a Tesla?
Yes, through the built-in browser. The sound keeps running even when the browser window is minimised or another app comes to the front.
Can I use it without GPS?
Yes. A manual speed slider and a demo route let you listen to the engines while parked, with no location permission needed.
Is the site free?
Yes, entirely, with no ads and no account. A support button lets you contribute freely, in whatever amount you choose.
Set everything up while parked, and keep the volume low enough to hear traffic and emergency vehicles.