Scott Sub 30

The Scott Sub 30 is aimed at a rider who wants a genuinely capable assisted bike for daily use, not a token motor bolted onto a basic hybrid. Scott positions the Sub range for longer or hillier suburban journeys, distinct from its flatter-focused Passage line, and that shows up in the choice of a strong-torque Bosch motor, a full-size battery and equipment fitted for carrying loads rather than just riding light. If your daily miles include hills, a shopping run or a mixed-surface path on the way home, that's the audience this bike is built for.

The motor and battery behind the assistance

Both builds share the same Bosch Performance CX motor, which Scott publishes at 85Nm of torque, paired with a 600Wh PowerTube battery and a Purion 200 display. That's a meaningful amount of push for climbing with a loaded rack, and the 600Wh capacity gives you more energy to draw on across a longer commute or a weekend trekking-style ride than a smaller battery would. Assistance is capped at the EU-standard 25km/h, as it is on any legal pedelec sold in the UK, so the benefit lies in effort saved on the way up a hill rather than a higher top speed. A 2A charger is fitted, which is worth knowing when you're working out how quickly you can top the battery up between rides. Bosch's PowerMore 250 range extender is listed as compatible if you want more capacity for particularly long days, though it's an optional add-on rather than something fitted to either build, so treat its cost separately from the bike's price.

Standard frame or Wave: choosing your fit

Scott sells the Sub 30 in two frame shapes at the same official UK list price of £3,599, and the choice comes down to how you want to get on and off the bike rather than anything to do with the electronics. The standard frame extracts its battery from the side and comes in at an approximate 29.2kg, according to Scott's own figures; the Wave is a low-step frame that removes the battery from the top and weighs around 30kg. Both share the identical motor, drivetrain and fitted equipment, so this is a mounting and handling decision more than a specification one. If you'll be lifting the bike onto a rack, into a hallway or up a step regularly, that extra weight in either build is worth factoring in, since neither is a light machine to carry.

Equipment that's already on the bike

A lot of what makes the Sub 30 useful for daily riding is fitted rather than optional. There's a Racktime SnapIt 2.0 rear carrier rated to 27kg, Lezyne Hecto E65 lighting front and rear, Curana mudguards and a kickstand, so it's ready for a wet commute or a supermarket run without buying extras. Scott's separate 160kg maximum system weight, which covers the bike, rider, luggage and equipment together, is the figure to check against your own weight plus whatever you plan to carry, rather than assuming the rack's 27kg rating is the only limit that matters. The 100mm-travel SR Suntour fork with a lockout, together with wide 60-622 Schwalbe Big Apple tyres, is aimed at smoothing out rougher pavements, canal paths and the sort of light off-road surface you might meet on a trekking route, rather than technical trail riding. Shimano's BR-MT200 disc brakes, with a 180mm front and 160mm rear rotor, give you stopping power suited to a bike that can be carrying a fair bit of extra weight. The drivetrain is a 10-speed Shimano CUES setup with a chain, not a belt, so it's worth knowing you're taking on the maintenance rhythm of a conventional chain and derailleur rather than a lower-maintenance belt-drive system.

Buying the right one

Scott's naming has been reused before: an older, non-electric Sub 30 exists under the same name, and its specification has nothing to do with the Bosch-equipped bike described here, so it's worth checking that any listing you're comparing is actually this current platform. When you're comparing offers, it's more useful to look at the motor, the 600Wh battery, the 10-speed drivetrain and the frame shape than any year label attached to a listing, since that label alone doesn't reliably tell you which specification you're getting. Within Scott's own range, the Sub 30's chain drivetrain sits at a lower list price than the belt-driven Sub 10 Belt, which is worth knowing if low-maintenance belt drive matters more to you than the stronger motor and larger battery fitted here. If you're buying new, Scott's guarantee covers the frame for five years, but only if you register within a year of purchase and keep up at least annual servicing through an authorised dealer; skip that and the frame guarantee drops to three years, and component parts aren't covered by it regardless. A Syncros trailer-axle adapter is also listed as compatible if you want to tow a child or cargo trailer, though it isn't part of the fitted equipment on either build. Between the motor's climbing help and the equipment already fitted for carrying loads, the Sub 30 is built to make hillier, load-bearing daily riding straightforward rather than something you have to plan around.