MTB

Gunai Ridstar Q20 Mini Motor, Max Speed . Review

A by-the-numbers review of the published specs, the prices the brand's own store shows and our range estimate from an open formula. We have not ridden it.

20% of MTB bikes have a smaller battery.

The people who rode it:Own one? Write a review

Battery

720Wh

Estimated range

No estimate

Weight

0lb

Torque

Not stated

$1,068

≈ $1,068/mi

Get notified

By the numbers

How the Gunai Ridstar Q20 Mini Motor, Max Speed . performs, on paper

Computed from this bike's catalogue figures with the published formulas. Nothing here was measured on a ride.

Estimated against claimed rangeHow far the brand says it goes, against how far our formula says it does.

Claimed50 mi

The catalogue entry for this bike is missing or implausible, so we do not publish a range estimate. How we work this out

Against other MTB bikesEach bar is the share of the other bikes of the type this bike is above; the tick is the middle.

Battery720 WhHigher than 20% of the 223 MTB bikes that state it

Weight0 lbToo few MTB bikes state it to compare.

TorqueNot statedNot stated, so not compared.

Top speed25 mphFaster than 54% of the 214 MTB bikes that state it

Estimated rangeNot statedNot stated, so not compared.

Range per priceNo list price stated, so range per price is not compared.

Left out because they do not state it: battery 6, top speed 15.

Cost over 5 years against a car and a transit passBuying, charging, servicing, battery and resale, against a car and a transit pass.

This e-bike$1,520

Car$8,613Transit pass$3,888

Purchase price: €989
Purchase price: $1,068
Purchase price: $1,068
Purchase price: $1,068
Resale value: −€241
Resale value: −$261
Resale value: −$261
Resale value: −$261
Charging: €109
Charging: $65
Charging: $124
Charging: $122
Servicing: $648
Battery replacement: $0

Purchase price: the euro list price converted at the site's fixed rate, because the brand states no price of its own in this market.

Charging at $0.173/kWh, the average household price (EIA, 2025, annual average). Where these prices come from

Defaults: 5 years, 3107 mi a year, fuel $1.84/L at 7 L/100 km, transit pass $65/month. Same maths as the cost-of-ownership calculator for the bike (price, charging, servicing, battery, resale) and the savings calculator for the car.

Run it with your own numbers Or compare with your own commute

Fit for the e-bike rules

USExceedsRated motor 1000 W is above the 750 W e-bike limit here.On the figures the brand states; not legal advice
CanadaExceedsTop speed 40 km/h (24.9 mph) is above 32 km/h (20 mph), the e-bike limit here; other vehicle rules apply. Rated motor 1000 W is above the 500 W e-bike limit here.On the figures the brand states; not legal advice
UKExceedsTop speed 40 km/h (24.9 mph) is above 15.5 mph (25 km/h), the e-bike limit here; other vehicle rules apply. Rated motor 1000 W is above the 250 W e-bike limit here.On the figures the brand states; not legal advice
EUExceedsTop speed 40 km/h (24.9 mph) is above 25 km/h (15.5 mph), the e-bike limit here; other vehicle rules apply. Rated motor 1000 W is above the 250 W e-bike limit here.On the figures the brand states; not legal advice
AustraliaExceedsTop speed 40 km/h (24.9 mph) is above 25 km/h (15.5 mph), the e-bike limit here; other vehicle rules apply. Rated motor 1000 W is above the 250 W e-bike limit here.On the figures the brand states; not legal advice

Full specifications

Gunai Ridstar Q20 Mini Motor, Max Speed . specifications

The catalogue's figures, as the brand states them. A dot shows where a figure sits among MTB bikes.

The model

BrandGunai
ModelRidstar Q20 Mini Motor, Max Speed .
TypeMTB
Available inEurope

Motor and power

Motor power1,000 W
Motor torqueNot stated

Battery and range

Battery720 Wh48 V × 15 Ah
Claimed range50 mi
Estimated rangeNo estimate

Frame and weight

Weight0 lb
FoldableNo
Step-throughNot stated
CargoNo

Speed, class and controls

Top speed25 mph
ThrottleNot stated
Fast (28 mph)Not stated

Price

Price$1,068

Where the figure sits among MTB bikes, from lowest to highest

FAQ

Questions about the Gunai Ridstar Q20 Mini Motor, Max Speed .

How much does the Ridstar Q20 Mini Motor, Max Speed . cost?

The catalogue list price is Europe €989. A list price is what the brand states, not what a shop charges today.

What are the Ridstar Q20 Mini Motor, Max Speed .'s specs?

The Gunai Ridstar Q20 Mini Motor, Max Speed . (MTB) has a 720 Wh battery, a 1000 W rated motor, a top speed of 25 mph and a claimed range of 50 mi.

How much does it cost to charge the Ridstar Q20 Mini Motor, Max Speed .?

A full charge costs about $0.12 (720 Wh ÷ 1,000 × $0.173/kWh, the average household price, EIA, 2025, annual average), with no charger loss. Enter your own price in the battery calculator.

⚡ Run the numbers

Run this bike through the calculators.

We've pre-filled each tool with this bike's spec. Adjust your own usage - terrain, weight, weekly km - to see the numbers for you, not the marketing brochure.

01 - Range