calculating mileage

xirokx · 17 Jul 2013 at 16:20

hi there

As I know nothing about cars I really could do with some help calculating mpg

I currently have a honda accord w reg 2.0l petrol

I am thinking of purchasing a honda civic 2005 1.6l petrol

Both vehicles are automatic I doubt this has much to do with MPG

I drive mainly in the inner city. 25mile round trip to and from work daily then theres other social communting also inner city

Would I really see that much of a saving on petrol?

Some examples would be appreciated

Thank you so very much

Havana_UK · 17 Jul 2013 at 16:23

You'll certainly save on fuel, but how much exactly depends on so many factors that it's impossible to predict how much.

Probably the closest guess (and it will be a guess) will be to look at the official urban figures for both cars to get an idea of how much more efficient the civic is than the accord, then use that ratio to work out your approx. savings based on your current fuel costs.

xirokx · 17 Jul 2013 at 16:37

Probably the closest guess (and it will be a guess) will be to look at the official urban figures for both cars to get an idea of how much more efficient the civic is than the accord, then use that ratio to work out your approx. savings based on your current fuel costs.

thanks for that

I wish I knew how, could you please kindly help?

Does spending £4k to purchase the car justify the petrol saving esp when my existing car is serving me well?

thank you so much

tom_e · 17 Jul 2013 at 16:41

xirokx said:
Does spending £4k to purchase the car justify the petrol saving esp when my existing car is serving me well?

No

GravyMonster · 17 Jul 2013 at 16:43

xirokx said:
Does spending £4k to purchase the car justify the petrol saving esp when my existing car is serving me well?

No. The saving will be a matter of a couple of hundred quid over the year at most.

You'd save more going to a manual car (if possible) although I'd imagine the difference still wouldn't be enough to make it worthwhile.

p1RATE · 17 Jul 2013 at 16:55

Assuming you cover about 10k a year (6500 for work 3500 social) and that the mpg figures that i have pulled up for the cars are correct the saving should be about £400 a year.

Accord - 31mpg - 1468 liters - £1982
Civic - 39mpg - 1167 liters - £1575

How you drive would make the biggest difference if you want to save fuel. It not really a big enough saving to justify a new car imo

Dr Who · 17 Jul 2013 at 17:43

Fill the tank, reset trip, drive until almost empty, refil tank, note miles done, calculate the gallons used by taking the refill litres and dividing by 4.5461
Divide miles done by Gallons used = MPG

Take your figure and divide by official combined figure = your driving factor

Take potential new car combined figure and multiply by your driving factor = new car potential MPG

Compare your MPG with new cars potential MPG

Simples