4 ms·

Twice as efficient, really? From what I can see you might get a few MPG more from a diesel but there's not that much difference. Modern petrol cars are return

Twice as efficient, really? From what I can see you might get a few MPG more from a diesel but there's not that much difference. Modern petrol cars are returning 50-60 mpg, diesels maybe 70, both when driven with care obviously. Diesels better in wet weather, really? I've never owned one, but neither have I ever had to leave my petrol car at home because it was raining, and I've owned some fairly old cars :)

usaar333 11y ago
50+ mpg? What non-hybrid is that fuel efficient? I've seen almost none that beat even 40 combined city/highway
- playworker 11y ago
  I know there's some sort of VW reputation issue with fuel economy these days ;) but something like the latest Golf as an example of a "normal" car (you need to expand the Fuel Consumption category to see the numbers: http://www.volkswagen.co.uk/new/golf-vii/which-model/engines/overview http://www.volkswagen.co.uk/new/golf-vii/which-model/engines...
- andrewaylett 11y ago
  US vs. Imperial gallons? That gets you 20%.
  - usaar333 11y ago
    ya, that explains the issue. GP's gallons are bigger than the ones I am thinking of
egroat 11y ago
I find twice to be relatively outrageous, but both my mother and I having the same car (Toyota Yaris) from the same year with mine being a diesel and hers petrol the following is noticeable: * I get about 1.25x the mpg in the diesel to her in the petrol. 1.5x compared to myself in the petrol (no mpg quotes because it depends on the type of driving) * The torque is useful. I drive a 30 minute commute, mainly motorway. If I drive hers it is a noticably worse drive. * For in town driving hers feels better every time. Easier to handle with no load (hauling something? Use the diesel), the diesel tricks me into speeding. * Wet weather? Never had weather problems in either car. So whilst I am definitely a less efficient driver than her I save a significant amount on fuel by having a diesel, and my calculation shows its several hundred a year better than if I had bought the petrol when I had the chance - more than covering the increased cost of the initial purchase.
dghughes 11y ago
Modern gasoline engines are supposedly 25% efficient the remaining 75% lost as heat. Modern turbo-diesel engines are again supposedly 50% efficient with the other 50% heat loss. I don't have specific stats just what I've heard over the years. Not to be antagonistic but what gasoline engines which are not a hybrid get (US or Imperial) 50 to 60mpg? I could see diesel engine vehicle average mileage for small manual transmission getting high Imperial 60mpg gas maybe high 40s mpg. Deep water and gasoline engine don't tend to work well, and in my region snow gets under the hood then melts (can't get it all out) which causes problems. Compared to a gas engine a diesel engine will run underwater if it has air you see 4x4 trucks with snorkels on the A-pillar (and some other sealing) in Africa countries, Australia and military use too.

usaar333 11y ago

50+ mpg? What non-hybrid is that fuel efficient? I've seen almost none that beat even 40 combined city/highway

playworker 11y ago
I know there's some sort of VW reputation issue with fuel economy these days ;) but something like the latest Golf as an example of a "normal" car (you need to expand the Fuel Consumption category to see the numbers: http://www.volkswagen.co.uk/new/golf-vii/which-model/engines/overview http://www.volkswagen.co.uk/new/golf-vii/which-model/engines...
andrewaylett 11y ago
US vs. Imperial gallons? That gets you 20%.
- usaar333 11y ago
  ya, that explains the issue. GP's gallons are bigger than the ones I am thinking of

egroat 11y ago

I find twice to be relatively outrageous, but both my mother and I having the same car (Toyota Yaris) from the same year with mine being a diesel and hers petrol the following is noticeable: * I get about 1.25x the mpg in the diesel to her in the petrol. 1.5x compared to myself in the petrol (no mpg quotes because it depends on the type of driving) * The torque is useful. I drive a 30 minute commute, mainly motorway. If I drive hers it is a noticably worse drive. * For in town driving hers feels better every time. Easier to handle with no load (hauling something? Use the diesel), the diesel tricks me into speeding. * Wet weather? Never had weather problems in either car. So whilst I am definitely a less efficient driver than her I save a significant amount on fuel by having a diesel, and my calculation shows its several hundred a year better than if I had bought the petrol when I had the chance - more than covering the increased cost of the initial purchase.

dghughes 11y ago

Modern gasoline engines are supposedly 25% efficient the remaining 75% lost as heat. Modern turbo-diesel engines are again supposedly 50% efficient with the other 50% heat loss. I don't have specific stats just what I've heard over the years. Not to be antagonistic but what gasoline engines which are not a hybrid get (US or Imperial) 50 to 60mpg? I could see diesel engine vehicle average mileage for small manual transmission getting high Imperial 60mpg gas maybe high 40s mpg. Deep water and gasoline engine don't tend to work well, and in my region snow gets under the hood then melts (can't get it all out) which causes problems. Compared to a gas engine a diesel engine will run underwater if it has air you see 4x4 trucks with snorkels on the A-pillar (and some other sealing) in Africa countries, Australia and military use too.