J12 fuel economy

General / Ordering Forum for the new 2021 (J12) Qashqai
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xaote
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Joined: Mon Nov 01, 2021 11:29 am
Qashqai Model: Mk.3 Qashqai - J12 (2021+) New Model

Post by xaote »

I thought it would be interesting to start a thread for monitoring the J12's fuel ecomony.
What the MPG is like in different driving conditions, i.e, motorway/highway, town/city or mixed.
'Spirited' driving or driving to deliberately increase MPG.
I'm also interested in the difference (if any) as the engine is 'run in'. Does it actually improve as the mileage/kilometres increases, after the first service or is this just a myth?
Also, how the economy differs in eco/normal/sport mode.
138bhp or 158bhp? Xtronic or manual gearbox?
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EJT19
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Qashqai Model: Mk.3 Qashqai - J12 (2021+) New Model

Post by EJT19 »

I’ve found the MPG to average at 38 for me around town and 41 on the motorway. I’ve gone through loads of fuel so I aren’t sure if my driving style is differed to when I had the J11 in diesel. Either way, it’s costing a fortune. I’ve had it 2 weeks and done 450 miles to £100. Just put 40 in it today and only got 200 miles for it 😩
Steve101
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Qashqai Model: Still looking for one....

Post by Steve101 »

We’re you getting more mileage from your j11?
Tekna J12, magnetic blue, black roof.
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gloucester
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Qashqai Model: Mk.2 Qashqai - J11 (2013–2017)

Post by gloucester »

EJT19 - would be useful if you put full car details in your base signature for reference.
(2015 Nissan Qashqai Tekna DIG-T 1.2 sold 15/6/18) ~ 2018 Suzuki Ignis SZ5 - 2018 Yamaha MT-07 ~ (2024 Volvo EX30 ordered)
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gloucester
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Qashqai Model: Mk.2 Qashqai - J11 (2013–2017)

Post by gloucester »

EJT19 wrote: Sun Dec 12, 2021 6:44 pm
I’ve found the MPG to average at 38 for me around town and 41 on the motorway. I’ve gone through loads of fuel so I aren’t sure if my driving style is differed to when I had the J11 in diesel. Either way, it’s costing a fortune. I’ve had it 2 weeks and done 450 miles to £100. Just put 40 in it today and only got 200 miles for it 😩
EJT19 wrote: Sun Nov 28, 2021 7:55 am
... I have gone for the Storm White N Connecta 138 with pano roof and tech pack in manual transmission. ...


Around 40mpg sounds fine when comparing it to the published economy chart which even now it's differently formulated is usually still optimistic - and hopefully it'll loosen up somewhat in the first thousand miles or so:

economy.JPG

This suggests around 33mpg around town?
(2015 Nissan Qashqai Tekna DIG-T 1.2 sold 15/6/18) ~ 2018 Suzuki Ignis SZ5 - 2018 Yamaha MT-07 ~ (2024 Volvo EX30 ordered)
sbrace06
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Qashqai Model: Mk.3 Qashqai - J12 (2021+) New Model

Post by sbrace06 »

Mine isn’t great although doing short trips mainly. It’s obv brand new too but noticeably worse than my 67 dig-t tekna plus 1.6 petrol.
Given this unit is same power, car is generally lighter (?) lighter bonnet etc. Also newer tech, it’s not great really. Also noticeably not as nippy as the 1.6 petrol, although as per my other topic it’s v sluggish off the line whereas the older one seemed much more perky.

I’m getting about 33-36 round town, had up to 45 on a 10 mile run. 5-10 mpg worse than my old car currently. But have only done 220 miles so far
Sandgrounder
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Qashqai Model: Mk.3 Qashqai - J12 (2021+) New Model

Post by Sandgrounder »

The overall average on my J12 is currently 41 mpg. Consumption is similar to my previous 1.2 petrol Qashqai’s. I don’t expect the mpg to improve until the weather gets warmer next year. I am hopefully it will achieve 45-50 mpg in the summer, if not higher?

A lot of people are commenting that the new E10 petrol is worse for fuel economy so I might try Super Unleaded sometime which is E5 but quite a bit dearer?
Now: 1.3 Tekna DIG-T 158 MHEV J12 ~ LED Front Fog Lights ~ Ceramic Grey with Pearl Black Roof/Grey Interior
Before: 1.2 N-Connecta DIG-T 115 J11B ~ Heat Pack ~ LED Pack ~ Vivid Blue (Sep 17-Oct 21)
Previously: 1.2 N-Tec DIG-T 115 J11A ~ Blade Silver (Nov 14-Sep 17)
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gloucester
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Qashqai Model: Mk.2 Qashqai - J11 (2013–2017)

Post by gloucester »

The published economy tables are showing around 44mpg combined - so why are people thinking they'll get more than that?

It's a sizeable car with a petrol engine and a pretty mild hybrid implementation - you can't make miracles.

What I've found with my Ignis is a HUGE difference these last few months not having AC on all the time as I did for three years. I'm now getting 15-20% better consumption having it off now most of the time. I'd imagined AC would be around a 5-10% hit. Just look at the money I've wasted.

So I'd suggest NOT having AC on all the time - I had it on all the time with my Qashqai which averaged just 34mpg over 2.3 years ownership.

I wonder if the original mpg figures are taken with or without AC being on...
(2015 Nissan Qashqai Tekna DIG-T 1.2 sold 15/6/18) ~ 2018 Suzuki Ignis SZ5 - 2018 Yamaha MT-07 ~ (2024 Volvo EX30 ordered)
xaote
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Qashqai Model: Mk.3 Qashqai - J12 (2021+) New Model

Post by xaote »

sbrace06 wrote: Sun Dec 12, 2021 9:01 pm Mine isn’t great although doing short trips mainly. It’s obv brand new too but noticeably worse than my 67 dig-t tekna plus 1.6 petrol.
Given this unit is same power, car is generally lighter (?) lighter bonnet etc. Also newer tech, it’s not great really. Also noticeably not as nippy as the 1.6 petrol, although as per my other topic it’s v sluggish off the line whereas the older one seemed much more perky.

I’m getting about 33-36 round town, had up to 45 on a 10 mile run. 5-10 mpg worse than my old car currently. But have only done 220 miles so far

I'm still a believer that bigger engines don't have to work so hard which in turn give better fuel economy. So is moving to small petrol engines actually better for the environment or not?

But the results you are all giving across are not as bad as I expected tbh. It is a big lump of a car
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xaote
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Qashqai Model: Mk.3 Qashqai - J12 (2021+) New Model

Post by xaote »

Sandgrounder wrote: Sun Dec 12, 2021 10:29 pm The overall average on my J12 is currently 41 mpg. Consumption is similar to my previous 1.2 petrol Qashqai’s. I don’t expect the mpg to improve until the weather gets warmer next year. I am hopefully it will achieve 45-50 mpg in the summer, if not higher?

A lot of people are commenting that the new E10 petrol is worse for fuel economy so I might try Super Unleaded sometime which is E5 but quite a bit dearer?

The 2nd half of my test drive I was getting just over 40 as well.
The 1st half I was watching the quarter of a tank drain to just above the red
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