Dualtron Thunder 3: 51 kg, 100 km/h, and a conversation about where you are allowed to ride it

The legal position, first, because it changes the review

A machine that does 100 km/h on a standing deck is not a scooter in any regulatory sense. In the UK, private e-scooters remain illegal on public roads and pavements. Across most of the EU, the legal ceiling for a personal light electric vehicle is 25 km/h. In most US states the Thunder 3 exceeds the class definitions entirely, and in Australia the state limits are lower still.

So this is a private-land machine, a track machine, or a machine for jurisdictions we are not going to name because the rules change faster than we publish. Check your own law. Riding this in traffic is a decision with consequences that are yours alone.

With that said — as a piece of engineering, it is the most impressive thing in this index.

118 kilometres

Minimotors claims 160 km. We measured 118 km on our loop, extended and re-run three times because the battery outlasted the working day. That is a 26% shortfall against a claim that was ambitious to begin with, and it is still nearly double the range of anything else here.

The 72V 40Ah LG 21700 pack is the reason, and it is also why the scooter weighs 51 kg. Charging from empty on the standard charger takes most of a night. A fast charger exists and is worth budgeting for.

Range anxiety is genuinely absent on this machine. It is the only one in the index where we stopped checking the gauge.

The brakes are the best part

Nutt four-piston hydraulics on 160 mm discs, with integrated cooling. From 25 km/h we recorded 3.1 m dry — the shortest in this test — and, more importantly, 3.1 m again on the tenth consecutive stop. There was no measurable fade. From 60 km/h the numbers stay proportionate, which is the thing that actually keeps you alive on a machine like this.

Given the top speed, anything less would be negligent. Minimotors clearly understood that.

Power delivery

Dual 50A controllers with a well-tuned throttle map mean the Thunder 3 accelerates hard without the on-off snap that makes cheaper performance scooters frightening. In the lowest of its riding modes it is genuinely rideable at 25 km/h without twitchiness, which is not true of every machine in this class.

What it is like to live with

• The fold works and the clamp is solid, but folded it is still a 51 kg object with sharp edges

• Twin stems mean almost no stem wobble, the defect that ruins most fast scooters

• The EY4 display is clear in sunlight and gives you real data, including per-motor current

• IPX5 covers rain, not standing water — do not ford a flooded kerb on this

Serviceability is the underrated feature

Minimotors sells the Thunder 3's front motor, its controllers, its swingarm, its stem lighting and effectively every wearing part as individual items. That is unusual in this category and it is the difference between a machine you repair and a machine you replace.

We did not need to replace anything in four weeks. What we did do was take the deck off to look at the wiring, and it is tidy: loomed, labelled, routed away from heat, with connectors that are sized for the current they carry. On several cheaper performance scooters that same inspection reveals unlabelled bundles and connectors running hot.

At $3,499 this is the minimum standard. It is also the reason a used Thunder 3 has resale value when a used no-name 72V scooter does not.

Four weeks of ordinary use

About 1,100 km, almost all of it on private land and quiet rural roads, with two riders. Nothing failed. The tyres wore evenly, the brakes needed no adjustment at all, and the suspension damping was identical at the end of the month to the beginning.

The one ergonomic complaint is the weight distribution when pushing it around at walking pace. Fifty-one kilograms with a high centre of mass is genuinely difficult to manoeuvre in a garage, and getting it up a single kerb requires planning.

Against the Kaabo Mantis King GT

The Kaabo costs $1,299 on sale and does 60 km measured. It is 14 kg lighter, easier to store, and more than fast enough to be illegal everywhere the Dualtron is. Unless you specifically need 118 km of range or the extra top speed, the Kaabo is the more sensible purchase by a wide margin.

Verdict

8.2 reflects a machine that does exactly what it set out to do, held back by a value score that cannot ignore $3,499 and by the fact that most readers have nowhere to ride it. If you have a long private road and the budget, it is superb. If you are looking at it for a city commute, you are looking at the wrong scooter.