When you add an entry in kilometers after adding entries in miles, it doesn't match up the units...maybe when you select your units for the car, it should convert all past entries to those units? It kinda sucks to have to re-enter everything.
Sorry johnsgunn, I think you're going to have to re-enter you data. It's hard for us to know someone's intention when they switch between English and Metric. Did they enter everything as kilometers, and now we convert? Or did they enter it as miles, so we leave it alone? It's tough to know without asking a bunch of ancillary questions.
I also think we're in an odd time here at the beginning of the application when Metric wasn't a choice for seven days, and there are a few people who started tracking without having that as an option. Going forward, I don't think the issue of switching for an existing car will come up very often.
I added an entry in litres. It shows me the price per gallon, which is fine - but when i go to edit the entry it says Price/Litre and lists the Per/gallon price instead of the per litre price. Under Litres it lists the actual litres, and not gallons - so things definitely aren't consistent.
Would be nice if I could see metric everywhere on the site if those were the settings I chose.
Also, I paid in Canadian dollars - but there is nowhere to select my currency.
All in all, I'm looking forward to seeing the site develop.
The odometer is in KM if you choose metric. Sounds like there are a fair number of people who use a mix of miles and liters so we might have to add support for that at some point. But for now, it's all KM/Litres or Miles/Gallons.