J12 fuel economy

General / Ordering Forum for the new 2021 (J12) Qashqai
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Sandgrounder
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Joined: Sun May 03, 2015 10:15 pm
Qashqai Model: Mk.3 Qashqai - J12 (2021+) New Model

Post by Sandgrounder »

From a 6 mile drive, mostly 50 mph with ECO setting on and slightly warmer outside at 11°C.

47.7 mpg.

Fuel consumption pretty similar to my 1.2 petrol Qashqai’s I had before.

Hoping to see a slight improvement in the summer! ⛽️

B5632E2C-CFA3-4064-ADB4-8BFB8003B4C7.jpeg

8978129C-F113-4C79-AB4B-6A5425DF843A.jpeg

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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Location: Gloucestershire, England
Qashqai Model: Mk.2 Qashqai - J11 (2013–2017)

Post by gloucester »

Autocar last week had the Final Report for their long-term J12 158 Tekna:

  • Claimed economy - 44.1mpg
  • Test average - 41.7mpg
  • Test best - 44.9mpg
  • Test worst - 40.8mpg
Cost per mile (fuel only) - 16.6 pence

Test duration - 4,582 miles

Faults - none
(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
Posts: 154
Joined: Mon Nov 01, 2021 11:29 am
Qashqai Model: Mk.3 Qashqai - J12 (2021+) New Model

Post by xaote »

gloucester wrote: Mon Mar 21, 2022 1:15 pm Autocar last week had the Final Report for their long-term J12 158 Tekna:

  • Claimed economy - 44.1mpg
  • Test average - 41.7mpg
  • Test best - 44.9mpg
  • Test worst - 40.8mpg
Cost per mile (fuel only) - 16.6 pence

Test duration - 4,582 miles

Faults - none
Do you know if these results from them running deliberate fuel economy runs rather than a total over the length of the long term test period?
That 'test worse' result seems very high.
J12 Acenta Premium 158 Xtronic
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gloucester
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Qashqai Model: Mk.2 Qashqai - J11 (2013–2017)

Post by gloucester »

That's just what they show in the article based on day-to-day running.

"Test worst" could have been a large number of short runs.
(2015 Nissan Qashqai Tekna DIG-T 1.2 sold 15/6/18) ~ 2018 Suzuki Ignis SZ5 - 2018 Yamaha MT-07 ~ (2024 Volvo EX30 ordered)
Sandgrounder
Posts: 700
Joined: Sun May 03, 2015 10:15 pm
Qashqai Model: Mk.3 Qashqai - J12 (2021+) New Model

Post by Sandgrounder »

Mpg improving by the day.

Range on a full tank of petrol now 530 miles (approx).

48.2 mpg 🚘⛽️ :)

FAFE2921-F5D5-4A10-BF8C-D5FBBAA93210.jpeg

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)
xaote
Posts: 154
Joined: Mon Nov 01, 2021 11:29 am
Qashqai Model: Mk.3 Qashqai - J12 (2021+) New Model

Post by xaote »

The figures coming in now are WAY higher than I expected. I know the warmers weather helps but I think it does show that economy improves as the mileage increases.... Which I thought was a myth.
J12 Acenta Premium 158 Xtronic
Sandgrounder
Posts: 700
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Qashqai Model: Mk.3 Qashqai - J12 (2021+) New Model

Post by Sandgrounder »

Yes, the fuel economy should adjust to your particular driving style over time (also weather dependent) with a gradual improvement in mpg.

RUNNING-IN PERIOD
Taken from the Nissan Qashqai handbook for the J12/Mark 3 (page 217 at the time of posting):
During the first 1,600 km (1,000 miles), follow these recommendations for the future reliability and economy of your new vehicle. Failure to follow the recommendations may result in shortened engine life and reduced engine performance.
• Avoid driving for long periods at a constant speed, either fast or slow.
• Do not accelerate at full throttle in any gear.
• Avoid quick starts.
• Avoid hard braking as much as possible.
• Do not tow a trailer during the first 800 km (500 miles).
xaote wrote: Sat Mar 26, 2022 12:09 pm The figures coming in now are WAY higher than I expected. I know the warmers weather helps but I think it does show that economy improves as the mileage increases.... Which I thought was a myth.
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)
Malcz86
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Qashqai Model: Mk.3 Qashqai - J12 (2021+) New Model

Post by Malcz86 »

• Avoid driving for long periods at a constant speed, either fast or slow.
This is wonderfully vague, so I guess no cruise controll for the first 1000 miles? and if motorway driving you need to slow down and speed up routinely?
Now: 1.3 NConnecta DIG-T 158 MHEV J12
Before: 1.2 Accenta Premium DIG-T J11
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 »

Malcz86 wrote: Mon Mar 28, 2022 12:38 pm
• Avoid driving for long periods at a constant speed, either fast or slow.
This is wonderfully vague, so I guess no cruise controll for the first 1000 miles? and if motorway driving you need to slow down and speed up routinely?
Yes, it's has been a long time since I've run an engine in but that's exactly what I have done in the past.

I used to increase the amount of throttle and the amount of revs every 100 miles as well.

There is a lot of different running in theory's out there
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fbgqashqai
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Qashqai Model: Mk.2 Qashqai - J11 (2013–2017)

Post by fbgqashqai »

Interested in the difference E5/E10 fuel is making, whilst I have a diesel QQ that never returns less than 50 mpg and often low 60s, my MX5 NC has dropped about 5 mpg with the new fuel and similar driving.
fbgqashai 2017 J11a N Connecta 1.5DCi in Silver
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