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998Cc And 1275Cc Mpg Difference


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#1 Corey96Williams

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Posted 13 September 2014 - 08:02 PM

I'm looking to buy a Austin/Rover Mini, and I was wondering is there any noticeable difference between the 1.0 litre and the 1.3 litre's MPG figures?

And what sort of difference is there from the carburettor and the fuel injection engines?

 

Everyone seems to get all sort of random numbers, so I wanted to know what you lot are getting. 

 

Thanks,

Corey  :gimme:



#2 Anthony30

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Posted 13 September 2014 - 08:10 PM

I think the Mini City E 998cc is best for MPG. :tumble:



#3 cal844

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Posted 13 September 2014 - 08:15 PM

It all depends on the tune of the engine, carb/ injection units and if its been regularly serviced

 

On my 998 i got 2weeks to £20 of fuel, in my 1275 it varies from 4 days to a week


Edited by cal844, 13 September 2014 - 08:16 PM.


#4 Corey96Williams

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Posted 13 September 2014 - 08:19 PM

There actually is quite a noticeable difference then...

 

Also, isn't the fuel tank very small? I heard you can only fit £25 worth of fuel in them  O_O



#5 1984mini25

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Posted 13 September 2014 - 08:21 PM

A few years back I used to get better mpg from a genuine 1275 mg metro engined Mayfair over my standard 998 25 with the same engine/diff as the city e. And that's purely because to get the 998 with a 2.9 diff to go anywhere at any decent speed, it need the nuts reved off it to do so. Where as the 1275 didn't need to be reved as hard through the gears, although the temptation too... :whistling:



#6 cal844

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Posted 13 September 2014 - 08:29 PM

There actually is quite a noticeable difference then...
 
Also, isn't the fuel tank very small? I heard you can only fit £25 worth of fuel in them  O_O


From half tank to the cap is £20, the tanks asre 5.5 or 7.5 gallons capacity

#7 Corey96Williams

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Posted 13 September 2014 - 08:36 PM

Have you worked out the MPG figures? 

I'm guessing around 40-45 on a good day?



#8 Stiggytoo

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Posted 14 September 2014 - 08:21 AM

My 1014cc engine with 1275 head gets thrashed about everywhere atm. 3.44 diff.
Over the last 11 fill ups I've averaged 39.4mpg which I think is very good considering the way I drive it.

Edited by Stiggytoo, 14 September 2014 - 08:21 AM.


#9 geoff-d

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Posted 14 September 2014 - 08:26 AM

998cc with a 2.9 diff on 10" wheels gets 55mph on a motorway run & about 45mpg around & about



#10 Tommyboy12

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Posted 14 September 2014 - 09:19 AM

998cc with a 2.9 diff on 10" wheels gets 55mph on a motorway run & about 45mpg around & about

 

Whereas my MG Metro 1275 with a 3.44 diff and 12x5.5s will get about 40mpg at 70mph.

 

Its horses for courses basically and has an awful lot to do with driving style. A thrashed 998 can get much less to the gallon than a steady 1275 and youll probably find they both get to their destination in around the same time!



#11 M J W J

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Posted 14 September 2014 - 09:27 AM

My 998 city E would give me around 44 mpg and this was a combination of town driving, A roads and country lanes. I'd do about 240 miles per tank although due to the design of the tank the petrol pump used to click off before it was actually full.

 

I did drive down to brighton and back once and I averaged about 40mpg while maintaining about 65mph all the time down the motorway.

 

To be honest compared to a lot of modern small cars they can hold their own mpg wise. This is probably due to the fact that they are much lighter than a lot of modern cars. I had a 1.2 litre Corsa as a courtesy car a week ago while my vectra was being fixed. I was only averaging about 37 mpg out of it. It really wasn't suited well to motorway and dual carriage way use. It felt worse to drive and slower than my mini did.

 

My mum's Suzuki swift only does about 48 mpg.



#12 HarrysMini

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Posted 14 September 2014 - 09:59 AM

It really depends on a lot of things. Gearing, drag etc. 

 

I would have thought that a 1275 would actually get more mpg than a 998 (with the same gearing) as it doesn't have to work as hard to reach the desired speed. 

 

I would imagine the difference between carb and injection would be negligible as long as they are both set up correctly.

 

I think you'll find with a 998, you'll be revving it more (using more fuel) as they are very revvy engines. 1275 are more torquey, so you won't need to rev it as much.



#13 Corey96Williams

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Posted 14 September 2014 - 12:47 PM

So pretty much doesn't matter what engine they have  :gimme:

That'll help with the search  ;D



#14 69k1100

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Posted 14 September 2014 - 02:03 PM

You'll have to rev it to exactly the same level to reach the same speed provided the gearing is identical. You just swap gears earlier as the power band is theoretically lower (depending on the tune) but in top gear both engines should be doing the same rpm to achieve the same speed.

#15 ACDodd

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Posted 14 September 2014 - 02:14 PM

I had my best mpg figures with a 1380 engine on Twin Su's. 58.5mpg at 65 to 70mph over 200 miles in a Midas kit car.

 

AC






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