Driving through towns for 30 miles stopping and starting, uses as much fuel as driving down a motorway for 30 miles, non stop.
Not unless you were doing moronic speeds on the motorway.
Driving through towns for 30 miles stopping and starting, uses as much fuel as driving down a motorway for 30 miles, non stop.
Driving 30miles through towns stopping and starting uses far more fuel then driving non stop for 30miles down a motorway ...
Driving through towns for 30 miles stopping and starting, uses as much fuel as driving down a motorway for 30 miles, non stop.
Where was this question being asked exactly?
anybody can tell me why driving above 50 consume more fuel? ...
the correct answer is: driving above 50 mph
my first answer is agrresive braking , but the correct answer is driving above 50mph...
i do some question papers, aggresive braking and acceleration will consume more fuel will be the asnwer, but the above question is difeerent...anybody can tell me why driving above 50 consume more fuel? ...
b. Aggressive braking
If you slow down lots you have to speed up lots which uses more fuel.
Every time you brake you're converting kinetic energy into heat energy (friction on the brakes). The harder you brake the hotter your brakes become, meaning more kinetic energy wasted.
[TW]Fox;14720289 said:You need to use fuel to accelerate back up to the speed you aggresively braked from.
I think the test is wrong, I've done a long run with my car at 55MPH and averaged 35MPG, did another run at 78MPH and got 38MPG. Both runs were ~250 miles. I emailed the guy who runs the website asking for clarification anyway.
Poorly worded question and assumptions all round.
Braking aggressively does not increase fuel consumption at all.
Braking to a stop, aggressive or not doesn't increase consumption.
However, as you all have pointed out, braking when you don't have to, does.
However, this is all about assumptions and they probably mean still moving, not stopping.
Oohhh I hate theories, half of them need to be re-written. (at least in jersey).
Standing still in traffic kills my fuel economy. I get 10mpg and that's only because the guage won't display any lower than that.
Do NOT do this on your practical test, you will fail or get a minor at the least. The DSA Examinors will expect you to change down gear when approaching things you have to slow down and stop at (until you come to a near stop, obviously)Try and coast up to lights