Why Do Electric Cars Make Fake Engine Sounds?

You might have noticed it yourself around Stockport or Manchester: an electric car that seems unnervingly quiet… and then suddenly you hear a hum, beep or strange whirr. It makes you pause. “Hang on,” you think, “why is that car making noise when it shouldn’t?” Well - there’s a solid explanation for it. Here’s what we at Dace Motor Company have learnt about why electric (and hybrid) cars sometimes make what feels like “fake engine sounds”, how it affects safety, the regulations behind it, and what that means when you’re out and about either behind the wheel or walking near roads.

The Quiet-Car Problem

Let’s set the scene. Imagine walking across one of Manchester’s busy streets - Deansgate, perhaps, or near Piccadilly. You’re used to the rumble of petrol or diesel cars: the engine revs, the exhaust drones, you hear something approaching before you see it. That sound gives your ears a clue: “Something’s coming.”

Now imagine an electric car gliding up - no engine roar, almost silent. That’s great for comfort and the environment, but here’s the issue: for pedestrians, especially someone with reduced vision, that silence can be dangerous. These cars can sneak up without the usual “VROOM” or “BRRRR” sound you’re used to.

In the UK, the government recognised this. From 1 July 2019 all new types of very quiet electric/hybrid vehicles must have an acoustic sound system to alert people nearby when they’re travelling at low speeds (below ~20 km/h or about 12 mph). 
So the “fake engine sound” is really more of a safety sound, a kind of alert. Let’s look at why this became needed, and how manufacturers implement it.

Why Make the Noise? Safety & Awareness

1. Pedestrian and vulnerable road-user safety

People who are blind or visually impaired rely a lot on sound to sense when vehicles are moving. If a car approaches silently, that “gap” in ambient noise is missing. Studies show that electric or very quiet vehicles are more likely to cause near-misses because people are simply not aware of them. 

For example, at speeds under ~20 kph, tyre noise and wind noise are minimal - meaning sound from the powertrain is the dominant cue. Without it, awareness drops. One piece put it plainly: “what’s good for the environment is not necessarily good for safety.” 
matfoundrygroup.com

Hence the regulation that vehicles must emit a certain minimum sound at low speeds. In the UK: “Sound generators will produce a sound when vehicles are reversing or running below 20 km/h … from 1 July 2019.” 

2. Behaviour of the vehicle and the ears

It’s not just about making some noise. The noise needs to convey vehicle behaviour – accelerating, reversing, perhaps human perception of movement. That helps another road-user judge “That car is moving” or “It’s backing up”. In the EU regulation (and by extension UK), the sound “should be similar to that made by a conventional engine” in terms of cues (though not identical) so our brains instinctively act. 

3. Urban environments and speed changes

Up in Stockport or Manchester, you might encounter electric vehicles creeping through side streets, pulling into parking spots, or reversing in car parks. At those low speeds, silence is especially tricky. So the sound kicks in primarily for low-speed movement. Once you pick up speed (above say 30 km/h) tyre and wind noise dominate anyway, so the artificial sound often isn’t required or is turned off. 

What Kind of Sounds and When?

So what do these “fake” sounds actually sound like? And when do they play?

Usually below a certain speed (around 20 km/h or ~12 mph) the car will emit a sound from an exterior speaker. The UK regulation states that if you have a “quiet” electric/hybrid vehicle, it must have an acoustic vehicle alerting system (AVAS) for low speed and reversing. 

The sound must reflect vehicle behaviour - for example, when accelerating the pitch might rise, or when reversing there’s a different tone. 

The sound isn’t allowed to mimic weird things like animals, or be overly melodious – because that might confuse people. For example, regulation says it cannot sound like a cow or horse. 

The design of the sound can differ by manufacturer - some use futuristic hums, others lean more conventional. A 2023 article noted carmakers using flutes, synthesizers, even human voices to design what the EV’s “vroom” should be. 

Let’s picture it: you're at the car park of our showroom on Greg Street, Reddish, Stockport. You’re walking past a row of cars. You hear a subtle hum and look around: the electric car parked nearby is pulling out. Because of that noise, you get that “okay-I-see-you” moment. That’s exactly the point.

Why It Feels “Fake” - Or Weird

If you’re someone who loves the roar of an engine, you might find the noise odd. Let’s talk about the reasons it feels “fake” or different:

The actual electric motor (in many EVs) doesn’t need a multi-gear box and typically produces much less mechanical noise than a petrol/diesel engine. Because of that, the sound we hear is added, not naturally loud.

Some manufacturers wish to retain the “feel” of a performance car, so they craft sounds that evoke acceleration, or engine revs. But since the motor doesn’t change gears, some of that is simulated.

Because the sound is artificially produced, you might get a feeling like “Why is that humming car so loud?” or “Why does that EV sound like it’s revving when it isn’t?” That’s the effect of branding, design and the regulation combined.

In a city like Manchester or Stockport, where soundscape matters (lots of ambient noise, buses, trams, people), the artificial noise must cut through but not dominate. If it’s too odd, pedestrians might ignore it or assume it’s not a car. Recall the article about people looking up when they heard futuristic EV sounds (expecting a spaceship). 

Regulation: What the Rules Say

Knowing the rules helps you understand why the noise is there, and what to expect.

In the UK, from 1 July 2019, all new types of the quiet electric and hybrid vehicles must have an acoustic sound system fitted. 

The minimum sound level for these vehicles, when travelling under low speed, is about 56 decibels - roughly the sound of a normal indoor conversation. 

The sound must be “indicative of vehicle behaviour” – e.g., acceleration, reversing. 

The regulation applies for low speeds; once you’re travelling faster and tyre/wind noise dominate, the artificial sound often stops or becomes unnecessary. 

Because of these rules, when you test-drive electric cars at our dealerships around Greater Manchester (for example at our Manchester branch, or Stockport locations) you might notice you hear the whirr in low gear / creep mode but it disappears when you accelerate away.

What Does This Mean for You?

Since we at Dace Motor Company focus on quality used cars (and increasingly electric ones), here’s how this all matters to you if you’re a driver, a pedestrian, or just someone curious:

If You’re Driving an EV

• Don’t be surprised if your car seems whisper quiet, and then makes a hum when you pull away slowly or reverse. It’s probably the AVAS doing its job.
• If you’re test-driving an EV or hybrid: pay attention to when you do or don’t hear the sound. That helps you sense if everything’s working.
• If you’re used to older petrol/diesel vehicles, you might miss the “engine noise” when accelerating. Some electric models deliberately add sound inside cabin for driver satisfaction; feel free to ask about that.
• When parking or reversing in tight spots around Stockport, that external noise is a safety feature - nice to know other road-users can hear you.

If You’re Walking or Cycling

• If you hear a quiet hum or whirr from a vehicle that seems too silent, that might be an electric car approaching. Stay alert.
• In busy areas like Manchester city centre or near our branches, remember: quieter doesn’t always mean safer, unless you actively look/listen.
• For children, older people or visually-impaired pedestrians: this sound gives an extra cue that a car is about to move.

If You’re Looking to Buy a Used Car

• If you buy a used electric or hybrid car, check if the AVAS or sound system is working correctly. It’s part of the safety kit.
• When buying from a trusted dealer like us, you deserve reassurance that these features are functioning.
• Even if you’re sticking with a petrol/diesel or conventional car, it’s good to understand why electric cars sound different - helps when you encounter them on the road!

The Emotional & Branding Side (Yes, There’s a Side)

Beyond safety and regulation, there’s something interesting going on: car makers are realising that sound contributes a lot to how we feel about driving. That’s right - the “fake engine sound” isn’t just about “beep beep I’m here”. It’s partly about identity, brand, experience.

Take a look at this snippet from a recent article:

“When an electric car travels above 30 km/h, it sounds much the same as a petrol-driven vehicle, as the noise is emitted from the tyres vibrating against the road rather than the engine.”  - The Guardian

It goes on to say that at low speeds the sound is barely audible, which is why the artificial noise comes in.

Another article noted how brands like Renault, BMW and Jaguar were experimenting with musical instruments, human voices or futuristic tones for their EV sound signatures. 

In other words: yes, it's a safety system, but it also highlights how the “sound of the car” is part of the experience. Some drivers expect some noise. It makes them feel like they’re driving something engaging rather than stealth-mode silent.

In our area - Stockport, Manchester - where car culture, heritage, performance cars and “that sound” still have strong place, you’ll spot people noticing an EV and wondering “what’s that?” rather than automatically hearing it approach. So brand and emotion matter.

Common Questions & Myths

Since you might wonder, I’ll answer a few myths or questions people often have.

Myth: “They’re putting engine noise in because they want to pretend it’s petrol.”
Not exactly. The goal isn’t to imitate petrol engines perfectly. It’s to provide a clear auditory cue. While some brands lean toward engine-type sound for driver feedback, the regulation primarily addresses safety. Some sounds do mimic traditional engine noises more closely for driver satisfaction, yes. But it’s not just “pretending”.

Question: “Do I always hear it inside the car?”
Not always. Some of the artificial sound is exterior only. Some models include interior sounds (for the driver) to let them feel the car moving. But that interior sound doesn’t replace the external safety noise requirement.

Question: “If it’s listener-based (for pedestrians), can it be turned off?”
In many cases, the exterior sound cannot be turned off by the driver - it’s required by law. However, there can be variation depending on market/model. For example, the UK regulation mentions that the sound “can be temporarily deactivated by the driver if judged necessary”. 

But that deactivation may be limited and subject to rules.

Myth: “So it’s just more noise pollution.”
Not really. The inserted noise is generally modest (~56 dB at the threshold) and only active when the car is moving slowly or reversing. At higher speeds, the tyres/wind dominate. So yes, there’s extra noise, but it’s targeted and intended to improve safety more than just add noise. The design guidelines even discourage overly musical or distracting tones. 

Question: “If the EV is going fast, do I hear it?”
Often not, or it’s very faint. The reason: once the car is above ~30 km/h, tyre/wind noise + ambient urban sound make the artificial sound less necessary - you’re already audible. 

Why We Mention This at Dace Motor Company

At Dace Motor Company, we believe in keeping you informed - whether you’re checking out used cars at our Stockport or Manchester showrooms, or you’re just curious about what’s changing in cars today.

We sell vehicles ranging across many brands (Alfa Romeo, Audi, BMW, Citroen, Ford, Hyundai, Jaguar, Land Rover, Lexus, Mercedes-Benz, MINI, Nissan, Toyota, Volkswagen, and more). Some of these will involve hybrid or electric models, or you’ll see them on the roads around us. So knowing why they sound different - seemingly “fake engine noises” - helps you understand what you are driving or hearing.

If you visit any of our showrooms - say the main one on Greg Street in Reddish, Stockport, or the Specialist Car Centre on Buxton Road, or German Car Centre on Manchester Road - feel free to ask about how the electric/hybrid models deal with sound safety, AVAS systems, and what it means for you as a driver of a used car or someone walking by.

Real-World Scenario: Walking Near an EV in Stockport

Let’s walk you through a scenario. You’re strolling past the Dace Car Supermarket on Greg Street in Reddish. It’s a sunny Saturday afternoon. You hear a subtle hum, you spin your head: there’s a sleek electric car reversing out of a space, tyres squealing a little as it transitions - but “engine” is quiet. The hum is the AVAS. You nod to yourself: “Ah, yes - I heard that.”

Now imagine a busy Sunday market near the Underbanks area of Stockport. An electric delivery van glides by, you barely hear it until it hits 12 mph and then you catch a whirr. Without that sound you might not have noticed it until it was very close. That minimal cue can matter.

So whether you’re a driver or a pedestrian, awareness of this sound helps you feel more confident and safe.

What to Look for If You’re Considering an Electric or Hybrid Used Car

If you’re browsing our selection (and we have a wide range of stock from small cars to luxurious 4x4s, with quality assurance etc.), and you’re interested in an electric or hybrid model, here are a few things you might check around the sound feature:

• Does the car have an external speaker or AVAS system visible or mentioned in the spec?
• When reversing or creeping forward, do you hear a consistent hum or alert tone?
• Is there any mention of “quiet mode” where sound is turned off, and if so, are you comfortable with that?
• Ask: does the sound system comply with UK/EU regulation (especially if vehicle first registered recently)?
• Walk around the vehicle while it moves slowly to ensure you hear that audible cue - it’s part of safety.

Beyond that, of course check the other important things: full HPI check, warranty, finance options (zero impact soft search), condition of battery (for EV), service history, etc. At our dealership we offer in-house warranty, daily price checks, competitive finance - we’re here to help you navigate all this.

How This Affects Everyday Life & Our Roads

Here are some thoughts on how this “sound feature” plays out in the broader scheme of things - especially around our local area (Greater Manchester, Stockport, Reddish, Eccles etc).

• Quieter neighbourhoods: With more EVs on the road, ambient engine noise drops. That’s good for local living - less rumble, less noise pollution (at least from engines). BUT it also means we as pedestrians must stay alert - quieter car doesn’t always mean safer.
• New soundscape: Our cities may start to sound different. Instead of loud engine revs, you might hear soft hums, futuristic whirs, alternative tones. That might take some getting used to - like hearing a new instrument in a familiar tune.
• Branding & experience: As more of the cars you or your mates buy are EVs/hybrids, you may notice each brand’s “signature sound” - subtle cues that say “this is Brand A’s EV” vs “Brand B’s EV”. It adds part of the experience - for better or worse.
• Walking/cycling awareness: If you’re out by the canal towpath near Stockport, or cycling through Manchester city centre, remember: a quiet vehicle might be closer than you think. That hum is a clue.
• Used car market impact: As we at Dace Motor Company continue to stock quality used cars, this feature adds a dimension to used EVs/hybrids. Knowing whether the vehicle retains a proper AVAS system, is compliant, and working, can influence value and peace of mind.

Some Final Practical Tips for You

When you’re in or around an electric car, take a moment at low speed (especially in reverse or creeping forward) to listen. Recognise the hum.

• If you’re a driver of such a car, feel confident that this noise system is part of the safety package. But don’t assume it replaces careful driving - still check mirrors, be pedestrian-aware.
• If you’re walking in a busy urban area and you’re used to engine noise, don’t assume “silence means clear road” - a quiet EV might be approaching.
• If you’re buying used and you’re curious about electric/hybrid models, ask specifically about how the sound feature works, whether it’s been maintained, and whether it meets regulations.

At our showrooms in Greater Manchester, don’t hesitate to ask a member of staff about how the electric/hybrid models handle these features - we’re here to explain.

So there you have it. That odd little whirr you hear from an electric car isn’t just fancy tech. It’s a carefully engineered, regulated safety feature, wrapped up with branding, design and driving experience. Whether you’re test-driving, browsing our used-car stock, or just walking down Stockport’s streets, when you hear that low hum… you’ll know what’s going on. And you’ll understand why that almost-silent car didn’t stay silent after all.