05 December 2023
G2 Quantum Electric Motorcycle Review – Urban Hero

The Quantum G2 shows how zipping around on electricity on two wheels can be done in Singapore.


The world of automotive journalism can be quite varied and interesting. Imagine riding a petrol-powered 1,802cc 400kg behemoth one day and a cute and nifty-looking 110kg electric motorcycle the next.

Ever since meeting the good folks at Quantum Mobility at National Bikers Weekend Singapore 2023, I’ve been looking forward to this test ride and my first electric motorcycle experience ever.

The Bike

The Quantum G2 is touted as “Singapore’s first mass-market electric motorcycle” but before y’all continue screaming at your screen, let’s call it what it is – a scooter. It’s also similarly easy to ride, and, believe it or not, its looks turn heads!

To begin, simply insert the key, twist the bezel to turn the Quantum G2 on, then pull twice on the right-hand brake lever and you’re ready to roll. There’s even a reverse function to make getting in and out of parking spots that much easier.

The digital instrument display is large and easy to read provided there isn’t strong direct sunlight. There’s also a cubby with a USB port to hold and charge your smartphone, and built-in Bluetooth speakers if you’d like to stream music on the go.

The Ride

On the road, this electric scooter is comfy and easy to ride. The front brakes can come across as grabby at first, but one gets used to it pretty quickly. I’d much rather have strong brakes for emergencies.

Otherwise, riding is quiet and pleasurable. One can slice through slow-moving traffic with ease, and get ahead of everyone else sitting in traffic on four wheels.

With my portly frame pretty much doubling the weight of the bike, acceleration is rather adequate. If you’re built like Sean, things should be more brisk.

Speaking of weight, heavier riders should take into consideration that weight will blunt not only performance but range as well. My test ride covered street-level 60-70km/h zones from Quantum Mobility’s Ayer Rajah office to AutoApp’s Tampines stomping grounds, and via KPE, MCE and AYE back to Ayer Rajah.

The ride started with the swappable twin battery packs at 98% charge. Keeping with the flow of street-level traffic was easy, with the Quantum G2 happily purring along with a simple twist of the wrist.

However, 70km/h zones proved to be more of a challenge, especially uphill sections. Heavier riders may find that speed slowly drops even with the throttle pinned wide open, and should plan ahead to build and carry momentum uphill.

Given how much full throttle I’d used en route to Tampines, arrival was with an indicated 58% state of battery charge. However, by the time the KPE tunnel had been entered, the battery charge had dropped to 48%. This meant sticking to the left lane, engaging cruise control and moseying along at a relaxed 65km/h to conserve battery.

Type 2 charge port

Yep, the Quantum G2 has standard cruise control available to use via a switch, to allow the rider to conserve energy and ride more comfortably. Neat!

headlight & turn signal switches, horn button
cruise control rockers, hazard lights & trip info rocker

This strategy worked well, and I arrived back at Ayer Rajah with 18% battery remaining. Take note though that at lower battery levels, acceleration will be noticeably reduced to protect the battery packs from damage, so plan manoeuvres accordingly.

The G2 Quantum is said to be able to do 80km on a full battery charge. Given the 1,123Wh battery pack and 80% charge used, the test ride consumed a calculated 898.4Wh over 52.6km. This works out to approximately 0.06km/Wh or 1,708Wh/100km, which was slightly off the manufacturer’s claimed 0.07km/Wh or 1,429Wh/100km. Again, this is very likely due to my weight.

The G2 Quantum is also said to top out at 90km/h but the fastest I managed to do in the entire test ride was an indicated 83km/h downhill with a tailwind. Again, this is likely due to my performance-blunting weight.

The Market

Quantum Mobility offers three utility plans for varied use cases in Singapore with the G2 Quantum. Pay-per-use allows much flexibility for short-term mobility needs that require no commitment and would be perfect for short-term expats and those who want to experience electric motorcycling.

One can also choose to lease the scooter from a minimum of three months to a five-year lease-to-own program, ideal for longer-term expats and office workers who wish to either have their own pair of wheels or switch to full-electric.

Finally, there’s a full subscription package with an all-inclusive rate that covers islandwide parking and charging for the more committed EV aficionado on two wheels.

In terms of current use cases, I’d say the Quantum G2 presents a very credible solution for those whose offices are relatively close to home, within a 5-7km radius. Can the Quantum G2 do longer trips such as from Tampines to Ayer Rajah? Yes, but with the proviso that charging is available in at least one end if not both, and if rush-hour commuting is one’s priority, for this electric scooter is perfect for lane-filtering through traffic jams.

When battery pack swaps become more commonplace, this will make the Quantum G2 that much more flexible. No more having to wait around for batteries to charge; instead, simply swap and go. This is something that Quantum Mobility is working towards and we hope to see this happen as soon as possible.

There’s so much to like here, and despite my gravity-enhanced frame-blunting performance and range, the G2 Quantum is a solid step in the right direction for motoring in a cityscape environment like Singapore. That’s why it’s such a likeable urban hero.

Now, all that’s left is for you to take a test ride, which is by appointment only. Contact details in the link below.

Photo Credits: Sean Loo (@auto.driven)

Technical Specifications

G2 Quantum Electric Motorcycle
Motor:  Mid-drive DC centre motor
Power: 3,000W (max. 5,000W)
Battery: Lithium 43.2V 26AH (1,123.2Wh), swappable
Charger: Type-2 fast charging
Charge Time: approx. 90 minutes (10-80%) and 2.5 hours to full (claimed)
Range: 80km (claimed)
Top Speed: 93km/h (claimed)
Kerb Weight: 110kg
Length: 1,850mm
Width: 685mm
Height: 1,080mm
Contact: Quantum Mobility Singapore


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