Nissan LEAF - General

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#2135111 27-Nov-2018 10:56

No, the odometer is accurate (in my Leaf at least) - over the 5km odometer test on the Southern motorway my odometer was out by less than 100 meters - which is <2%, so it doesn't have a corresponding inflation of the range. I was fully expecting it to be out by 0.6km given the lacklustre performance on the speedo.

Perfectly legal doesn't mean it is perfectly useful to the driver nor perfectly considerate to other road users. It is also perfectly legal to have no rear seat belts in an old 1950's car, but it doesn't mean it is a good idea.

Elliemay

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#2135116 27-Nov-2018 10:59

tripper1000:

No, the odometer is accurate (in my Leaf at least) - over the 5km odometer test on the Southern motorway my odometer was out by less than 100 meters - which is <2%, so it doesn't have a corresponding inflation of the range. I was fully expecting it to be out by 0.6km given the lacklustre performance on the speedo.

Perfectly legal doesn't mean it is perfectly useful to the driver nor perfectly considerate to other road users. It is also perfectly legal to have no rear seat belts in an old 1950's car, but it doesn't mean it is a good idea.

Under reporting of speed makes range and efficiency look better because you are driving slower (and therefore using less 'fuel') than you think. And if you use less fuel, you get better range.

tripper1000

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#2135121 27-Nov-2018 11:07

Ah of course. Suspect you have struck upon Nissans rational.

wellygary

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#2135145 27-Nov-2018 11:26

kingdragonfly: http://evtalk.co.nz/nissan-leaf-brake-system-potential-issue-flip-the-fleet/

"Nissan Leaf brake system potential issue"
Flip the Fleet
by Geoff Dobson

More than 60 reported failures – including five in New Zealand – of the electrically-driven brake control unit in Nissan Leafs made between November 2012 and February 2016 have prompted EV coalition Flip the Fleet to seek more information.

“Our research has led us to believe that these failures can be attributed to faulty ‘Series-A’ firmware that is written into the brake control at the time of manufacture (or a subsequent firmware update to ‘Series-B’),” says Flip the Fleet’s blog post.

No reported failures have been found in Leafs running the further updated ‘Series-C’ firmware, the group says.

It says some drivers have described depressing the brake pedal but found braking seemed ineffective and stopping ability was reduced or non-existent.

“Our research has shown that in the case of a simulated failure, reduced braking ability is still available to the driver,” the blog says.

“You may need to slam the brake pedal hard and right to the floor to get some braking!”

Flip the Fleet estimates about 2400 potential vulnerable vehicles are in New Zealand, most still running the ‘Series-A’ firmware.

Hopefully this will shed some light on what is actually going on....

https://www.radionz.co.nz/news/national/376884/nzta-to-test-nissan-electric-cars-after-suspected-brake-failure

SaltyNZ

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#2135168 27-Nov-2018 11:55

tripper1000:

Yes the speedo standards requirea slight under-read and no over-read, but the Leaf speedo is right on the outer limits quoted in that article. AA says at 100kph it must read between 87.3 and 100 kph. My Leaf reads 88-89kph at 100kph on the GPS.

Mine is the other way around - which is the direction that makes more sense? When I am doing 100km/hr true speed, the speedo reads 112, and it's a pretty linear relationship: 50km/hr true --> 56 indicated, 80km/hr true --> 89 indicated. I say 'makes more sense' because if yours is really that way around then you'd be speeding by quite a bit when your speedo said 100, whereas when mine says 100 I'm actually only doing about 90.

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Elliemay

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#2135173 27-Nov-2018 11:59

SaltyNZ:

tripper1000:

Yes the speedo standards requirea slight under-read and no over-read, but the Leaf speedo is right on the outer limits quoted in that article. AA says at 100kph it must read between 87.3 and 100 kph. My Leaf reads 88-89kph at 100kph on the GPS.

Mine is the other way around - which is the direction that makes more sense? When I am doing 100km/hr true speed, the speedo reads 112, and it's a pretty linear relationship: 50km/hr true --> 56 indicated, 80km/hr true --> 89 indicated. I say 'makes more sense' because if yours is really that way around then you'd be speeding by quite a bit when your speedo said 100, whereas when mine says 100 I'm actually only doing about 90.

That's the same as what Tripper was saying, ie when the speedo says 100km/h the GPS says the car is doing 88-89km/hr.

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tripper1000

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#2135175 27-Nov-2018 12:02

SaltyNZ:

tripper1000:

Yes the speedo standards requirea slight under-read and no over-read, but the Leaf speedo is right on the outer limits quoted in that article. AA says at 100kph it must read between 87.3 and 100 kph. My Leaf reads 88-89kph at 100kph on the GPS.

Mine is the other way around - which is the direction that makes more sense? When I am doing 100km/hr true speed, the speedo reads 112, and it's a pretty linear relationship: 50km/hr true --> 56 indicated, 80km/hr true --> 89 indicated. I say 'makes more sense' because if yours is really that way around then you'd be speeding by quite a bit when your speedo said 100, whereas when mine says 100 I'm actually only doing about 90.

You are correct - thanks for pointing it out. I got my true and indicated readings back-to-front. At 100kph true, speedo reads 111 kph also. What I should have said was at 88-89kph on the GPS, Speedo reads 100 kph.

I can't correct my post any longer. :-(

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#2135177 27-Nov-2018 12:10

Phew! :-)

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MarkH67

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#2135210 27-Nov-2018 12:50

I drive to work & back with the cruise control set to 110kph, this means I'm actually travelling at pretty close to the exact speed limit. On my Leaf, I'm generally getting a 10% over-read, pretty much to the nearest 1 kph. For every vehicle, I have owned and any I regularly drive, I always do a check of the speedo accuracy. With modern smartphones, it is so easy to use one of a huge number of apps to check on what speed you are travelling at.

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#2135235 27-Nov-2018 13:22

Haven't had a chance to read it, but the Listener has a new article about the Leaf brakes issue - see https://www.noted.co.nz/tech/nissan-leaf-brakes-concern/

We've got a '13 Leaf; I've told my wife (who's the primary driver) about it and just passed on the advice I've read (but which they carefully couch as not advice!) in the Flip the Fleet FAQ - if it feels like the brakes aren't working plant the pedal as far as it can go and keep it there until you stop.

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#2135281 27-Nov-2018 14:56

its being reported that when the 2018 Leaf goes on sale in Australia it will come with a Vehicle to Grid (V2G) option, (presumably for all those households with Solar)- and that the expected OZ price will be from "around $50K" AUD- so we might see it this side of the ditch for under $60K NZD .. (~.90c ex rate + 5% additional GST)

https://thedriven.io/2018/11/19/nissan-leafs-added-range-vehicle-to-grid-technology-earns-first-aussie-award/

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#2135384 27-Nov-2018 16:54

wellygary:

its being reported that when the 2018 Leaf goes on sale in Australia it will come with a Vehicle to Grid (V2G) option, (presumably for all those households with Solar)- and that the expected OZ price will be from "around $50K" AUD- so we might see it this side of the ditch for under $60K NZD .. (~.90c ex rate + 5% additional GST)

https://thedriven.io/2018/11/19/nissan-leafs-added-range-vehicle-to-grid-technology-earns-first-aussie-award/

If it hits the market at $60k and it has equivalent specifications to a conventional vehicle worth $40k then it starts to look really viable. If you can save $1k a year on fuel for that $20k of additional capex then that's a 5% ROI which is about the same as a typical mortgage rate.

wellygary

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#2135392 27-Nov-2018 17:04

alasta:

wellygary:

its being reported that when the 2018 Leaf goes on sale in Australia it will come with a Vehicle to Grid (V2G) option, (presumably for all those households with Solar)- and that the expected OZ price will be from "around $50K" AUD- so we might see it this side of the ditch for under $60K NZD .. (~.90c ex rate + 5% additional GST)

https://thedriven.io/2018/11/19/nissan-leafs-added-range-vehicle-to-grid-technology-earns-first-aussie-award/

If it hits the market at $60k and it has equivalent specifications to a conventional vehicle worth $40k then it starts to look really viable. If you can save $1k a year on fuel for that $20k of additional capex then that's a 5% ROI which is about the same as a typical mortgage rate.

Although a large chunk of that $1K per year is the RUC exemption....which will end at some time (while probably not in 2021, in the long term someone has to pay for the NLTF)

frednz

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#2135405 27-Nov-2018 17:18

jonathan18:

Haven't had a chance to read it, but the Listener has a new article about the Leaf brakes issue - see https://www.noted.co.nz/tech/nissan-leaf-brakes-concern/

We've got a '13 Leaf; I've told my wife (who's the primary driver) about it and just passed on the advice I've read (but which they carefully couch as not advice!) in the Flip the Fleet FAQ - if it feels like the brakes aren't working plant the pedal as far as it can go and keep it there until you stop.

Thanks, a very good article. There is also a separate Geekzone thread about the faulty brakes issue here:

https://www.geekzone.co.nz/forums.asp?forumid=162&topicid=237671

MarkH67

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#2135415 27-Nov-2018 18:08

wellygary:

Although a large chunk of that $1K per year is the RUC exemption....which will end at some time (while probably not in 2021, in the long term someone has to pay for the NLTF)

You are clearly talking about VERY low km per year driving. To only save $1K per year WITH RUC exemption would put the driving at well under 10,000kms. I'm saving about $2,500 per year with RUC exemption (between fuel savings and the service & maintenance savings), how much I save after the exemption ends would depend on how much they decide to charge, maybe it will drop to $1,800 per year but it could be a bit more or a bit less. I'm running somewhere around 16,000 km per year.

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