Scott Sub Sport 20

The Sub Sport 20 is Scott's answer for riders who want an e-bike that's ready for real life from day one: hill-flattening assistance, a proper commuting battery, and all the bits you'd otherwise buy separately already bolted on. It suits daily journeys, weekly shops and longer leisure rides where you don't want to think about the last few miles home. The main choice here isn't between different levels of kit so much as between two frame shapes built around the same electrics and running gear.

Standard or Wave frame

Both builds share the same motor, battery, gearing and brakes, so the decision comes down to how you get on and off the bike, and how far up the size range you need to go. The standard frame runs from S to XXL and pairs a narrower-sweep bar with a 170mm saddle. Wave uses a low step-through frame instead, stopping at XL, with a wider-sweep bar and a broader 195mm saddle to suit the more upright position that shape encourages. If mounting and dismounting with shopping bags, a work bag or simply less flexibility is part of your daily reality, Wave is the more forgiving shape; if you want the largest size available, the standard frame is the one that gets there. The trade-off shows up in weight too: Scott quotes the standard build at around 28.9kg against roughly 30.6kg for Wave, worth knowing if you'll be lifting the bike up steps or into a hallway regularly.

What the Bosch system actually does

Both builds use a Bosch Performance Line PX motor, which Scott specifies at up to 90Nm of assistance, paired with a removable 720Wh PowerTube battery. In practice, that torque figure is what deals with a loaded pannier and a short rise without much extra effort from you, and 720Wh is a genuinely large capacity for this class of bike, though Scott doesn't attach a specific mileage figure to this build, so it isn't something to plan an exact route length around. The battery slides out of the frame for charging indoors with the supplied 2A charger, which matters if there's no convenient socket where the bike lives. Control is via Bosch's Purion 200 display; the stem's own spec sheet references a Kiox 300 mount, but that's a compatible fitting rather than the display you actually get, so it isn't a Kiox screen out of the box. If ordinary commuting range isn't quite enough for your route, Scott lists compatibility with the Bosch PowerMore 250 extender, though it isn't fitted as standard and carries no bike-specific mileage figure of its own.

Gearing, brakes and suspension for everyday riding

Gear changes go through a Shimano Cues 10-speed derailleur setup with an 11-48T cassette, giving a wide enough spread for loaded hill starts and faster flat sections without much thought required. Stopping is handled by Shimano's BR-MT200 two-piston disc brakes, with a larger 180mm rotor at the front and 160mm at the rear, a sensible split given the front does more of the work under braking. A SR Suntour fork with 100mm of travel takes the edge off potholes and dropped kerbs, useful on the mixed street and cycle-path surfaces this bike is built for. None of this is the belt-drive, internal hub-gear arrangement Scott builds into its Sub Tour range instead, so there's a chain and derailleur to keep clean and adjusted over time, the usual trade-off for a wider gear range and easier roadside fixes if something does go wrong.

Carrying capacity and everyday ownership

Both builds come with a rear rack rated to 30kg and marked KID'n'CARRY ready, so a child seat is a genuine option to add later rather than something needing a workaround, though it isn't supplied with the bike. Lights, mudguards and a kickstand are all fitted already, which is the difference between an e-bike you can commute on immediately and one that needs another shopping trip first. Scott's stated system weight limit is 160kg, and that figure covers the bicycle itself plus rider and luggage together, not just what you weigh. Register as the first owner within a year of purchase and keep up annual servicing at an authorised dealer, and the frame carries a five-year guarantee, dropping to three years without that servicing history; components sit outside this cover.

Checking you're looking at the right version

Scott's UK site currently lists an earlier version of the Sub Sport 20 built around a 600Wh battery, alongside 60-622 tyres and a 25kg-rated rack, at £3,399 for each frame shape; that's a different specification to the 720Wh, 55-622 tyre, 30kg-rack builds described here, so it's worth checking which battery and rack figure an offer is actually quoting rather than assuming the older price carries across. This 720Wh version is Scott's latest official specification, though the manufacturer does not currently list this latest official version in its UK catalogue, which is part of why older and newer listings get mixed together online. It's also worth not confusing this with the Sub Sport eRIDE 20, an earlier bike built around a different 625Wh Bosch Performance CX motor rather than the Performance PX system described here.

What stands out about living with this kind of setup daily is less any single spec figure and more how the parts add up: a motor with genuine hill-flattening torque, a battery large enough that charging becomes a routine rather than a chore, and enough carrying capacity that errands rarely need a second trip. That's the real case for choosing it over assembling an equivalent commuter from separate parts.