Mpg

Andys

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Hi we have a Hymer B774 tag axel, 2.8 Ducato
Just done over 1900 miles in France some of it up hill down dale around Chamonix, we averaged 24 mpg. I think that's ok (is it ? )
 
I have a Rapido 9048DF with a fiat 2.3 JTD engine and I consistently average 33-35 mpg, however I am careful how I drive it with economy in mind and I had the engine programmed for economy.

These figures were measured over various journey, the longest being 5000 miles.
 
I was trying to keep it to 55 mph, there were 4 adults and we did carry a bit of water as some of he places we stayed did not have the facility
 
Andys said:
Hi we have a Hymer B774 tag axel, 2.8 Ducato
Just done over 1900 miles in France some of it up hill down dale around Chamonix, we averaged 24 mpg. I think that's ok (is it ? )
Click to expand...

Sounds reasonable to me

Tag axle = extra drag plus you are probababily heavy (i mean the truck not you :dance:)

Rich
 
We have a Hymer 684 on a Fiat Ducato chasis with a 2.8ltr engine. I tend to use cruise control as much as possible and it constantly returns about 25 mpg averaged over the whole trip, so you are not too far out.
 
MPG - 2.5 TDi Fiat Ducato, Twin. Axle

Andys said:
Hymer B774 tag axel, 2.8 Ducato, .... averaged 24 mpg. I think that's ok...
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We average 30mpg with a 2.5TDi engine, tugging 3.2tonnes. This varies from 28 to 32 depending on Hilly routes, or Motorway. Typical speed is 45/50 (A Roads) to 55/60(Motorway).

For comparison:
Large Lorries will be around 12MPG
Large Modern Coaches on average will be 10-12 MPG, older variants will be 8 - 10 MPG.
My 12 year old Subaru 2L is about 29-31 MPG, whilst the Fiesta is 44 - 47 MPG.

Lugging around 3 tonnes, 4 tonnes in your scenario Andy, is a challenge for any engine, so to achieve 25 or above is I think good.

Curious if owners of large truck conversions agree with the comparisons given?
 
my talbot 2.0 petrol does 18 to 28 mpg depending on the roads, my car does 14 to 24 but is a 4.7 v8 so your camper doesnt sound that bad.
 
My 2 litre HDI Boxer does about 22 mpg no matter what kind of driving I do.
 
I average around 23/24 (calculated, not relying on the totally inaccurate Fiat computer) in our tag axle 3 litre Euro 4, 5 ton which I am very happy with travelling at 70 on motorways. Only increases to 25 at 60. I use the MPG calculation app on my phone which is brill, records info for multiple vehicles and endless fill ups. Recently changed our van for 3litre Euro 5 same weight, only done 800 miles but showing a 2 mpg improvement over the previous van.
 
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Anyone know how I can work out the MPG for my 1987 Nissan cabstar 1952cc petrol engine.
Cheers
David
 
Fill up, drive til empty, go back to same pump and fill again. Measure amount of miles driven and litres consumed. For real accuracy, do this many times.
 
Star Trekker said:
Anyone know how I can work out the MPG for my 1987 Nissan cabstar 1952cc petrol engine.
Cheers
David
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1. Fill your fuel tank right up to the brim.

2. Reset your " Trip Meter " to zero.

3. Drive it as you normally would in everyday use.

4. Once you have used a good 3/4 of the fuel, re-fuel it right up to the brim again ( Preferably at the same Pump ).

5. Take a note of the mileage and reset the Trip Meter again to zero.

6. Divide the number of Litres of fuel used by 4.546 this will convert it to Gallons.

7. Divide the number of Miles you have driven by the number of Gallons of fuel you have used.

8. This will give you the M.P.G. that you require.

9. The more times you do this procedure the more accurate it will become .



Before people start...............................3 decimal points on the conversion is close enough in my humble opinion.



Hope this helps.
 
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Andys said:
Hi we have a Hymer B774 tag axel, 2.8 Ducato
Just done over 1900 miles in France some of it up hill down dale around Chamonix, we averaged 24 mpg. I think that's ok (is it ? )
Click to expand...

Its all about how you drive? Stick to around 55mph, take every chance to get behind HGVs and you can average 30mpg? That's what I get from my Ducato 1998cc.
 
Ian0600 said:
Its all about how you drive? Stick to around 55mph, take every chance to get behind HGVs and you can average 30mpg? That's what I get from my Ducato 1998cc.
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Ooooh, I don't like doing that!! I like to see what is up ahead & I don't do many M-way miles either. My favourite "dodge" is to try to drive (safely) without using the brakes. So you read the road a long way ahead & lift the right foot early to adjust your speed so you can negotiate hazards at the correct speed without braking.

Of course, it isn't always possibel & you must brake sometimes if you misjudge it or something unexpected happens, but slowly, as you develop the technique, the number of unexpected brakings gets less. You can learn to approach roundabouts with a decent gap in front that allows you to adjust your speed to join the traffic without slowing too much. Every time you avoid slowing down, you avoid accelerating, every time you avoid braking you have saved fuel.

I get near enough 30mph out of my 2ltr Over cab bed Ducato, but much depends on the roads travelled. It's easy on motorways & A roads, but impossible on narrow hilly lanes over Welsh (or Cumbrian) mountains where you are never in 4th gear, never mind top!
 
That's largely how I drive Smaug, and I use correct gears for going downhill, unlike most who sit o their brakes the entire time *sigh*
 
Yep - tis the acceleration that chews up the juice. Reading the road and looking as far ahead as you can to minimise start-stop and anticipate what's going on is how you are meant to drive anyhow, right?

The roundabouts thing is something I do with any vehicle - watch for a space as you approach and adjust your speed to slot in without having to alter speed dramatically is the way to go (except the "Planners" now seem to think its a great idea to put lights on roundabouts and make you stop 2 or 3 times even if its empty :mad1:. Surely this defeats the whole raison d'etre of the things?).

Same with on-ramps onto dual-carriageways etc - get some momentum going and filter into the flow nicely.
One of my pet hates is the dithering clots who drive slowly on acceleration lanes (on-ramps) and then stuff their vehicle into a 70mph traffic stream at near-walking pace - especially if I'm stuck behind them and get endangered by their ineptitude. Why can't these dense muppets work out that joining a road at similar speed to the traffic using it is WAY easier and WAY safer than crawling into the path of fast-moving vehicles?

I try not to use big throttle openings and prefer to coax the van up to speed - I'll rev it high enough so it doesn't labour in the next gear, but you don't need to plant your foot to do this. Once up to speed, I try to look ahead and try to always keep as much momentum as I can - and it's definitely the way to go for maximising the fuel cons IMO.
 
Just got home to West Yorks from Scotland 1410 mls total 32.1mpg RENAULT MASTER 2.2 Diesel campervan im delighted with that.
 
I have a Hymer S700 plated at 4665kgs and it is a 412 Merc 2.9L with an automatic gearbox, and 15 years young.

Frankly, I worry not about the MPG on the basis that if I blew part of my children's inheritance on my dream of freedom, then the least of my worries is how much fuel I use. My insurance company cover me for 8000 miles in the next 12 months so I will just keep putting in whatever fuel I need.

I doubt there is a standard MPG figure for any MH as it depends on design, load, how you drive, the countryside you drive in, how well it is maintained, age, and very importantly, tyre pressures.

Whilst one is worrying about all those items, one is missing Pimms O'clock!!!!!
 
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