DYU C6 vs DYU D3F: range, specs and 5-year cost

Range figures are MathBikes estimates under the reference ride. Prices are the current listed price.
Spec	DYU C6	DYU D3F
Estimated range	33 km	26 km
Battery	450 Wh	360 Wh
Weight	27 kg	19.1 kg
Motor torque	45 Nm	40 Nm
Top speed	24 km/h	24 km/h
Price	$1,099	$499
5-year cost	$1,548	$1,093

Where each one wins

DYU D3F is 7.9 kg lighter.
DYU C6 is 7 km further on range.
DYU C6 is 90 Wh more battery.
DYU C6 is 5 Nm more torque.

The DYU C6 leads on 3 of these, the DYU D3F on 1. Neither sweeps it, so the choice comes down to which of those you actually use.

Who each one is for

DYU C6

Suits you if you want:

rated to 120 kg of rider and luggage together
about 33 km estimated, which covers a 16 km each-way commute

What it asks in return:

45 Nm of torque, so long climbs will ask for your legs

DYU D3F

Suits you if you want:

19.1 kg, light enough to carry up a flight of stairs
folds, so it fits a boot, a train or a hallway
rated to 120 kg of rider and luggage together

What it asks in return:

40 Nm of torque, so long climbs will ask for your legs
about 26 km estimated, so it wants a charge most days
360 Wh, a small pack to keep an eye on in winter

Each line above is read straight from the specification: torque, weight, payload, battery and our range estimate. Nothing here is a preference, and neither bike is being recommended over the other.

What each one costs to own

Over 5 years the DYU D3F costs about 421 EUR less to own, once purchase, charging, servicing, a battery replacement where one is due, and resale are all counted.

That figure moves mostly on the battery. The DYU C6 covers about 24,000 km before its pack is due for replacement; the DYU D3F, about 19,200 km. Ride less than that and the replacement never enters the sum.

Five years at 3,000 km a year, from the constants published on our methodology page. Resale is subtracted, which is why it shows as a negative.
Over five years	DYU C6	DYU D3F
Purchase price	$1,099	$499
Charging	$68	$68
Servicing	$648	$648
Battery replacement
Resale value	$-268	$-122
Total	$1,548	$1,093

Run these numbers on your own mileage

Which one to buy

Pick the DYU C6 if you ride to the edge of the battery and dislike planning around it.
Pick the DYU C6 if you would rather charge less often than carry less weight.
Pick the DYU D3F if you carry the bike up steps, onto a train, or into a flat.
Pick the DYU C6 if your route has real hills, or you carry cargo or a passenger.
Pick the DYU D3F if the five-year total is what you are optimising.

Verdict

On the measured axes the DYU D3F is the better buy, and the DYU C6 needs a reason of its own: a colour, a frame, a shop you trust, a price that moves. None of those are in our numbers, and all of them are legitimate.

Range here is an estimate under one reference ride, not a measurement. Yours will differ with terrain, weight, tyres and weather, which is what the range calculator is for.

DYU C6 vs DYU D3F