Petrol equivalent to current diesel mpg

DUTR

sunshinetours wrote: »

This is MSE isn't it and the original question is being asked from an MSE point of view

Depreciation will almost certainly be the biggest cost on any newish car - wanting a new car or certain type of car doesn't change that fact

It's no different from spending to save, once all the parameters are totalled there is not really a saving, the depreciation is not really so with a car, as you are enjoying it's use in the meantime.
Obviously working to a budget, but once you have saved you spend, no point hoarding the money if there is nothing else to spend on whether it be a car or otherwise.

spacey2012

Stoke wrote: »

For me, if you want a small car, go for a Daihatsu Cuore. When driven economically, they've been known to get over 60mpg. .

Yeah, usually in front of me on a long winding road with no overtaking points.

almillar

As has been said, you'll not manage this, because if you're mileage is going down, then you cost per mile will go up. This assumes you'll be doing shorter journeys, so both engines would spend more of their time getting up to optimum temperature, rather than at it. Diesels tend to take longer to get up to temp than petrols, and petrols are generally better for short journeys, so your theory is sound from that point of view, but your cost per mile WILL go up.
But that's the small stuff. Changing car is sure to be the biggest cost. Unless you're really going to be abusing your car with 2 mile journeys everywhere, just keep it!

Foxy-Stoat_3

OP, whats your current annual and expected annual mileage ?

What car do you drive, year and mileage?

Forgetting about cost of buying it, insuring, taxing, services and repairs then the actual mpg based on £1.28/ltr and achieving the same running costs was answered in post #2.

Your cost per mile based 55mpg @ £1.35/ltr for the diesel is £0.11

You can quickly calculate costs per mile for a petrol car:
40 mpg @ £1.28/ltr for the petrol = £0.14
45 mpg @ £1.28/ltr for the petrol = £0.13
50 mpg @ £1.28/ltr for the petrol = £0.12

So if you only drive now say 5,000 miles a year in a 45 mpg car you could potentially expect your fuel for the YEAR to be £100 (£8.33 per month) more than your equivalent diesel, assuming you could achieve the same mpg figures on the reduced mileage with your diesel, which you probably won't.

You should include the cost of insurance and tax into the price per mile cost as the servicing and repairs can range from £200 a year to loads. Most diesels 1.9 diesels are cheaper to tax and insure than 1.8 petrol cars so that should be a factor.

sunshinetours

DUTR wrote: »

It's no different from spending to save, once all the parameters are totalled there is not really a saving, the depreciation is not really so with a car, as you are enjoying it's use in the meantime.
Obviously working to a budget, but once you have saved you spend, no point hoarding the money if there is nothing else to spend on whether it be a car or otherwise.

Sorry but this is simply untrue in context of what OP has posted.

They are looking to change to petrol from existing diesel car (one which is already depreciating of course)

If they have a stash of money sitting there with no other use then I would suggest they head for the investments board as a start where they will probably receive better advice than buying a newer depreciating asset

DUTR

sunshinetours wrote: »

Sorry but this is simply untrue in context of what OP has posted.

They are looking to change to petrol from existing diesel car (one which is already depreciating of course)

If they have a stash of money sitting there with no other use then I would suggest they head for the investments board as a start where they will probably receive better advice than buying a newer depreciating asset

Not sure why you have one on you today or see it any different , the OP already has a car, (assuming it's paid for) whether new or previously owned he will have to spend to change it, insurance , advertising the current car and possibly other hidden charges, if his mileage is reducing, then his costs will reduce as he is inputting less fuel for the new shorter journeys.
As said it's all good and well investing, but there does come a point when you get tired of looking at a screen suggesting you are on the way to being a millionaire, and you just want/need some retail therapy. A colleague was due to retire a few months back and dropped down dead the week before, I'm sure his wife is good to the tune of at least £200k, which I'm sure she would have preffered half of that and still had her husband about.
I'm not suggesting one spends their last penny on a car, after using some of my investments, I still have plenty left for a rainy day, or I could keep looking at a screen that says I have half as much again as the investments, but no shiny car in the garage

Stoke

spacey2012 wrote: »

Yeah, usually in front of me on a long winding road with no overtaking points.

I don't really understand your point here... they go up to 87MPH, which is above the national speed limit. Are you saying that they're too slow for you? You wouldn't be one to break the speed limit now would you pettle?

The most economical speed of most cars is between 56mph and 60mph in 5th gear, which is usually the national speed limit on long, winding roads, unless you're talking about the motorway of course... which usually isn't winding. It's also much faster than the speed of most urban roads in towns and cities. Now you're not condoning speeding are you? I wonder what car you drive... makes me chuckle thinking about it mind

DUTR

Stoke wrote: »

I don't really understand your point here... they go up to 87MPH, which is above the national speed limit. Are you saying that they're too slow for you? You wouldn't be one to break the speed limit now would you pettle?

The most economical speed of most cars is between 56mph and 60mph in 5th gear, which is usually the national speed limit on long, winding roads, unless you're talking about the motorway of course... which usually isn't winding. It's also much faster than the speed of most urban roads in towns and cities. Now you're not condoning speeding are you? I wonder what car you drive... makes me chuckle thinking about it mind

It's not what it does but the way it does it, a quick pass here and there gains many minutes over a journey.
Also the most economical speed of most cars is the slowest constant speed in the highest gear, my car has 6 gears as did the last, and some cars have 7 or eight forward gears.

Also the most likely cars to be speeding are not petrol performance cars, ok there are less of them about, but it's not the 1st report I have read about diesels speed more so than petrol (could it be to do with the ability to change speed quickly ?)

sinbad182

Stoke wrote: »

I don't really understand your point here... they go up to 87MPH, which is above the national speed limit. Are you saying that they're too slow for you? You wouldn't be one to break the speed limit now would you pettle?

The most economical speed of most cars is between 56mph and 60mph in 5th gear, which is usually the national speed limit on long, winding roads, unless you're talking about the motorway of course... which usually isn't winding. It's also much faster than the speed of most urban roads in towns and cities. Now you're not condoning speeding are you? I wonder what car you drive... makes me chuckle thinking about it mind

Someone doesn't like their pride and joy Daihatsu being insulted!

Stoke

DUTR wrote: »

It's not what it does but the way it does it, a quick pass here and there gains many minutes over a journey.
Also the most economical speed of most cars is the slowest constant speed in the highest gear, my car has 6 gears as did the last, and some cars have 7 or eight forward gears.

Also the most likely cars to be speeding are not petrol performance cars, ok there are less of them about, but it's not the 1st report I have read about diesels speed more so than petrol (could it be to do with the ability to change speed quickly ?)

A quick pass on a winding road at the expense of safety eh? Doesn't hurt, until you meet that car on the other side of the road. I drive a lot of miles every year, and yes, I spend a lot of time on winding roads and there's a certain thing as the speed limit, and the speed limit for the conditions. If you're driving winding roads, I don't see why anyone needs to go over 60MPH. I'm not saying all country lanes are winding, they certainly aren't. My drive to work is from Stoke to Wilmslow and I go via the A34, perfect conditions to put your foot down and overtake.

If you drove at the slowest constant speed, your car begins to 'kangaroo' at which point it's !!!!ing fuel away. Just saying like.

sinbad182 wrote: »

Someone doesn't like their pride and joy Daihatsu being insulted!

Good effort, I drive a Diesel Lupo... purely for the super high economy. Nice try though. The OP was merely asking for a high economy petrol car, and I suggested the Daihatsu Cuore. The Lupo petrol is not particularly efficient. The most I ever got when I owned one was 42MPG. Still, it makes me chuckle that you react like that, makes me think you're very protective of your own car. Mine is just a tool gets me to work and back reliably and is cheap to run.