Strange sound 1.2 dig-T and poor fuel economy

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lafs74
Posts: 2
Joined: Tue Nov 21, 2017 1:48 pm

Strange sound 1.2 dig-T and poor fuel economy

Post by lafs74 » Tue Nov 21, 2017 2:15 pm

My wife's Juke (rigistered Nov. 16) with 12000 kilometres on the clock, has terrible fuel economy.

They advertise 17.2 km/l (47.1 mgp) but it does more like 9 to 11 km/l (25.5 mpg to 31 mpg). Nissan dealership say, I might get 13.5 km/l, but probably no more. However they are not able to explain to me how to improve. Plus they said Jukes use a lot when you drive on the motorway - probably equivalent to walking with a cardboard sign on a stick in a storm.

They did a readout of the computer, and (surprise) nothing is wrong.

However there is a sort of faint wailing sound when accelerating and the revs reach around 1750 to 2000 rpm.

Can anyone suggest mothods of driving, which I can present to my wife? And should she just accept having a small ghost in the engine, or can she point at some part of the engine and claim the sound comes from there?


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wrinkly47
Posts: 169
Joined: Sat Nov 21, 2015 3:03 pm

Re: Strange sound 1.2 dig-T and poor fuel economy

Post by wrinkly47 » Wed Nov 22, 2017 11:50 am

Hi lafs 74

The quoted rev rang seems about right for the turbo kicking in and one can certainly hear when this happens.
I have never driven the 1.2 but this seems the most likely explanation.

If the engine layout is the same as the 1.6, the turbo is situated at the back of the engine by the bulkhead but may be obscured by the engine cover - it looks a bit like an old style hair drier.

If you check out some posts you will see that fuel economy on the 1.2 is a frequent topic but people still enjoy the motor regardless.


Brian 1961
Posts: 4
Joined: Fri Nov 24, 2017 5:00 pm

Re: Strange sound 1.2 dig-T and poor fuel economy

Post by Brian 1961 » Fri Nov 24, 2017 5:15 pm

My wife is a very good but enthusiastic driver she will not use the cruise control she doesn't like it,average fuel consumption can drop to around 35mpg when she is driving, she also likes the engine mode on normal not eco.


Xsub
Posts: 41
Joined: Sun Jan 22, 2017 6:06 pm

Re: Strange sound 1.2 dig-T and poor fuel economy

Post by Xsub » Mon Nov 27, 2017 5:18 pm

Mpg on the 1.2 is poor and nowhere near what Nissan claim, however I've seen better results and performance using shell v power, mines now done 17k and since I started using v power at around 14.5k, at around 15k she changed completely, picks up really well and is much quicker, MPG despite driving it harder actually went better and I average 32mpg around town, up by around 2 mpg, if I drove it carefully if I'd probably achieve around 36 but life's too short for that 😃


Jukestar57
Posts: 3
Joined: Wed Nov 29, 2017 11:49 pm

Re: Strange sound 1.2 dig-T and poor fuel economy

Post by Jukestar57 » Fri Dec 01, 2017 10:32 pm

I had a 1.2 petrol Juke after having the 1.6 engine and was very disappointed at the fuel economy, getting about 38 mpg. As I travel 44 miles a day it was costing me a fortune so I reluctantly bought the 1.5 diesel and now get about 58 mpg.


marrygold
Posts: 12
Joined: Fri Sep 29, 2017 1:12 pm

Re: Strange sound 1.2 dig-T and poor fuel economy

Post by marrygold » Sat Dec 02, 2017 8:10 am

i did.nt even think about getting a petrol,the 1.5 dci does 60+ on the motorway and 50 round town.


lafs74
Posts: 2
Joined: Tue Nov 21, 2017 1:48 pm

Re: Strange sound 1.2 dig-T and poor fuel economy

Post by lafs74 » Wed Dec 06, 2017 10:57 am

Thank you for all the comments.

I took over the Juke for a few days and I pushed it to between 13 and 14 km/l on motorway and city, without driving like a very old person. It actually seems you might get 16 to 17 km/l if you drive between 70 and 90 km/h.
Anyway. Nissan told me, it consumes a lot at speeds in exces of 110 km/h, and that is just something we have to live with. Along with the poor fuel economy, when the wife is driving!


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