berlinonaut
Veteran
- Location
- Berlin Germany
Based on your calculations the Brompton will pay for itself relatively quickly through saving fuel cost alone: A saving betweenJust thinking out loud / for future reference (and in the absence of anywhere more appropriate to put this)... Ideally the commute in the car, via my preferred route is about 22 miles and 35 minutes under optimum conditions; costing about £6.40 daily in fuel for the round trip; assuming 45mpg and £1.45/litre.
Currently, thanks to sodding roadworks compounded by the bloody school run traffic the commute is a shade more than 27 miles and an hour; so around £8.00 in fuel for the round trip.
The optimium approach with a folder would seem to be to dump the car as close to the city as I can get whilst avoiding the traffic, then cycle the rest of the way predominently on the tow path. This would be a 13.5 mile car journey (so around 20 mins and £4.00 in fuel round trip) plus an 8 mile ride that Google slates at 45 mins; so probably a total journey time of 1hr 10-15 mins once the faffing of sorting the bike out has been taken into account.
So... comparing the "hybrid" commute against the best-case car journey gives an increase in travel time of around 40 mins from 35-75 minutes or a bit over double, and a decrease in fuel cost of £2.20 or around 35-40% from £6.40 to £4.00.
Conversely comparing the bike-based commute to the worst-case journey gives an increase in travel time of around 15 minutes or maybe 25%, while fuel cost drops by around £4.00 / 50%.
£2.20 and £4.00 per day accumulates to between £440 and £800 per year, 200 working days assumed. If fuel prices rise it will be more saving and faster payoff. So even an expensive new Brompton will pay for itself relatively fast and even faster if you are able to profit from a cycle2work scheme (which you can't with a used bike).