Aventon Soltera 3 ADV vs Ride1Up Roadster V3

The Aventon Soltera 3 ADV and the Ride1Up Roadster V3 are both light city bikes, and they are not the same shopping problem. Aventon prints the Soltera at $1,499, 37 pounds, Class 1, no throttle, a Gates belt, and a spec motor of 36 volts and 250 watts at 40 newton-meters. The product story also prints a 500-watt peak. A new-releases chip prints 540 watts peak. The Roadster’s product page prints a 500-watt angled-gear MIVICE hub at 50 newton-meters, a 36-volt 10-amp-hour pack labeled 360 watt-hours, and a tile that says “1-3 & 28mph” without saying which class ships. The prices on the Roadster do not agree with each other. The Soltera guide and the Roadster guide are the long versions. This is the split.

Two hundred fifty and five hundred are not the same word

The Soltera’s spec line is 250 watts and 40 newton-meters. The story’s 500 and the chip’s 540 are both called peaks, and they still disagree. Do not publish a blend. All three sit under 750. With pedals and no throttle, the bike leaves as Class 1. The Roadster prints 500 watts and 50 newton-meters and does not print a peak. Fifty is at the hub, already at the wheel. Forty on the Soltera is at a mid-mounted belt motor before a single ratio. Subtracting 40 from 50 does not make the Roadster 10 Nm stronger on the road. The 45 versus 65 page is why those units are not one measurement. The power page is why a peak and a spec line are not synonyms.

OutdoorGearLab, 13 November 2024, measured a 638-watt peak on the Roadster and wrote that the motor advertised at 500 watts was a 250-watt hub. The product page still says 500 and 50. A 36-volt, 18-amp controller multiplies to 648 watts. Six hundred thirty-eight, 648, and 500 are three sentences. None of them is the Soltera’s 540. Do not hang the chip’s peak on the Ride1Up because both brands have used the word 500.

The Soltera leaves as Class 1, with no throttle. The Roadster’s tile lists Class 1, 2, and 3, and prints 28. A working throttle is not Class 1.

The packs almost match. The miles do not.

Thirty-six point nine times 9.94 is 366.8, which is the Soltera pack. Thirty-six times 10 is 360, which is the Roadster pack. The gap is 6.8 watt-hours. That is not a second battery. The Soltera claim is up to 70 miles on 366.8 watt-hours. If that ride happened, it would be about 5.2 watt-hours a mile, and the page does not name the rider, the mode, or a camera. The Roadster has a camera. Electric Bike Report, 17 May 2025, ran 17 to 49 miles. Three hundred sixty divided by 17 is about 21 watt-hours a mile. Three hundred sixty divided by 49 is about 7. OutdoorGearLab’s throttle-only Boost loop, a 180-pound rider, was 18.9 miles. Do not average 17, 49, 18.9, and 70. The watt-hour page is the unit. Seventy is a brochure. Seventeen is a hard test of a different bike.

A belt is not a belt

The Soltera is single-speed Gates, printed as 60T, 22T, and 122T. There is no cassette to index. The Roadster sells a 9-speed Microshift Advent, 44-tooth ring, 11-36 cassette, or a Dayco Power Carbon belt. Ride1Up writes that the belt version can only really support 24 mph, and the chain 26 to 27, while a FAQ says the bike is designed to reach 28 with pedal assist and that holding 28 takes maximum effort because the sensor is torque, not cadence. The tile’s 28 and the belt’s 24 are not the same sentence. The hub does not use those gears the way a mid-drive does. Electric Bike Report’s May 2025 highstep was still a Shimano Deore 10-speed. The step-through they rode was already the Advent. If a listing still says Deore, it is the launch bike.

Weight is the other quiet fight. The Soltera prints 37 pounds. The Roadster page prints 40 in a gravel setup. Forty minus 37 is 3, and that subtraction only holds if both figures include the same parts. Electric Bike Report weighed the Roadster at 44.1 and had claimed 39. Forty-four point one minus 37 is 7.1, and that uses a scale against a hangtag. Do not average 40 and 44.1. Both payload lines are 300 pounds. The Roadster sheet does not print a rack rating. The Soltera fit chart prints S as 5 foot 1 to 5 foot 5, and XL as 5 foot 1 to 6 foot 4. Those ranges overlap. The Roadster size guide also prints overlapping pairs. Read the frame you click.

Who should buy which

Buy the Soltera if you want one price, $1,499, a bike that leaves as Class 1 with no throttle, a belt you wipe, and 37 pounds on the page. Do not buy it as a 540-watt machine because a chip said so. Seventy miles is the claim. This desk does not have a camera loop for it. The brakes were not on the crawl this comparison used, so they do not get a winner.

Buy the Roadster if you want gears, or a Dayco belt, a torque sensor, and a throttle that Electric Bike Report puts at Class 2, with a Class 3 unlock the tile advertises and the belt may not reach. Read the cart. $1,295, $1,395, and $1,495 have all been printed, and the warranty on Ride1Up’s page is one year. A review card’s two-year line is the review card. The brakes that page does print are Tektro HD-R285, two pistons, and EBR lists 160 mm. That is a city rotor. The brake guide is why 160 mm is not a cargo brake. Skip both if the job is a rack, a fat tire, or a mid-drive that uses the cassette.