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EV MOT Failure rate - sammy1

Electric car tyres are 40 per cent more likely to fail MOT than petrol vehicles (msn.com)

I refuse to comment

EV MOT Failure rate - alan1302

But overall it says:

'Since 2000, one-fifth of EVs have failed their MOTs, compared to an average failure rate of 29 per cent for petrol cars.'

So get people looking after their tyres more and all good.

EV MOT Failure rate - Ethan Edwards

But overall it says:

'Since 2000, one-fifth of EVs have failed their MOTs, compared to an average failure rate of 29 per cent for petrol cars.'

So get people looking after their tyres more and all good.

Am I reading this article right? "40% more likely for an EV to fail on tyres". Okay then it says one fifth of EVs( that's 20%) compared to 29% of fossil cars.

So 20% is 40% greater than 29%...really? Should I stop drinking or what?

EV MOT Failure rate - mcb100
Stick to the manufacturer’s specification of tyres and they should outlast an equivalent ICE.
Don’t and they won’t.
Simple.
EV MOT Failure rate - Adampr

It's quite interesting but not, of course, for the reason that GB News (!) would have you believe.

The information is contained in the IMI's response to a consultation on extending the period to the first MOT from 3 years to 4 years. The point that they are trying to make is that this may not be wise because they are increasingly seeing 3 year old EVs with tyres worn beyond the legal limit, so there is a risk that people will allow this to continue and be in danger in the fourth year of ownership.

They do also go on to say that this suggests that people need to be better educated about the importance of frequent basic safety checks before any serious consideration is given to extending the MOT exemption.

EV MOT Failure rate - edlithgow

I get some vague and irritating waffrle from Google about not being sure about the safety of that link.

Sounds oddly like the actual content of the link, as reported.

EV MOT Failure rate - SLO76
Beyond tyre wear I can’t see how EV’s will have a higher failure rate when there’s far fewer moving parts and thus far less to go wrong.
EV MOT Failure rate - _

Any car where there is more work for the tyres to do, be it torque or driving style will wear faster. Tyre compund also makes a difference.

EV MOT Failure rate - Andrew-T

Is structural corrosion any more likely after 4 years than three ?

EV MOT Failure rate - Adampr

Is structural corrosion any more likely after 4 years than three ?

Well, yes, but probably not significantly so

EV MOT Failure rate - Will deBeast

Given that most collisions are caused by people rather than their cars, I'd be in favour of moving the first MOT to four years.

But ... only if we introduce mandatory top-up training for drivers. I reckon if this could be delivered for about the cost of an MOT if it was mostly online. It may need to be done at a centre of some sort to prevent fraud. Perhaps a theory like test every 5 years.

It is bonkers that I can pass a test at 17, and never have to do a day of top-up training in my life. My father passed his driving test around 1950 - the roads, and the highway code, have changed considerably since then.

EV MOT Failure rate - daveyjp

EVs on three year PCPs, owners reluctant to spend £200+ on new tyres for a vehicle they are handing back so let the MOT decide,

The moral of this is to check any used EV and see if it has ditchfinders.

EV MOT Failure rate - Bromptonaut

Not much meat in that report though as others say loads of electrics are on PCP for three years. Monkeying around with the odometer to avoid excess miles is said to be endemic.

As it's tyres it has, in reality, little to do with EV's themselves and everything to do with their drivers not checking the tyres.

EV MOT Failure rate - sammy1

So far nobody has commented on the extra weight of these vehicles. One of the contributors to the forum who has driven quite a few EVs has said they do not handle as well as ICE cars By this I take to be perhaps grip in corners and G forces when cornering, Extra weight is bound to make a difference to suspension components trying to keep a car on the road. Some of these EVs will be driven as enthusiastically as your ICE car many more so I would guess given their acceleration so yes tyres are going to suffer. I wonder how much the components of these EVs are beefed up to cope with the weight. The EVs seem to have come out well in the emissions no mention at all of failures!! I could not resist a comment.

EV MOT Failure rate - John F

As new EVs make financial sense for high mileage business drivers, I think the mileage of 3yr old EVs might be higher than 3yr old ICE Vs, thus more likely to have illegal tyres?

EV MOT Failure rate - Gibbo_Wirral

As new EVs make financial sense for high mileage business drivers,

How? I would imagine "high mileage business drivers" would need to just get from A to B to C to D to E and more in one day without pausing for x hours at a charge point.

EV MOT Failure rate - mcb100
If it saves them a fortune in benefit in kind, it’ll be worth sitting at a rapid charger for an occasional half hour.
EV MOT Failure rate - primus 1

I have been advocating this for a number of years, when I used to be gas qualified we had to have a refresher every five years, I assume if you have a firearms certificate, it has to be regularly checked, yet, we can drive around in potentially lethal weapons. with no formal re training since the day the test was passed, perhaps a traffic light based system, where green Is ok, amber needs a few things looking at, and red, .well, I’m sure we’ve all seen drivers who fall into this category..

EV MOT Failure rate - mcb100
‘ One of the contributors to the forum who has driven quite a few EVs has said they do not handle as well as ICE cars.’

That’ll be me. Believe me, I can hustle a Polestar 2 down a twisty road fast enough to make your eyes water (former rally driver, former high performance/race/rally instructor, trainer US Navy special forces in high performance driving techniques), but if I want 5% more agility I’ll take an equivalent ICE.
For the vast majority, for the vast majority of the time, handling and grip are indistinguishable from an ICE.
EV MOT Failure rate - Sofa Spud

While EVs are generally a bit heavier than the petrol or diesel equivalents, I'd assume they'd be fitted with tyres that cope with the heavier weight.

The high torque of many EVs could theoretically cause more rapid tyre wear but most drivers wouldn't be using all the available torque in normal driving, not least because it would drain the battery rather quickly.

Most EVs have regenerative braking, which significantly reduces the need to use the brakes, so there'd be less wear from braking than on an i.c. car.

Anything from GB news caters for the reactionary right who are against anything 'eco'.

Edited by Sofa Spud on 04/08/2023 at 11:51

EV MOT Failure rate - Andrew-T

Most EVs have regenerative braking, which significantly reduces the need to use the brakes, so there'd be less wear from braking than on an i.c. car.

Surely the 'less wear' would affect the mechanical parts, not the tyres, which still have to apply the braking force to the road surface ? And for a relatively heavier vehicle.

EV MOT Failure rate - Terry W

It may be nothing to do with the weight or acceleration of an EV.

I suspect given their age all EVs are fitted with tyre pressure monitoring systems whereas most older ICE are not.

This means that routine checks of tyre pressure are non-existent on newer cars (there is no need) and excessive tyre wear never identified until MoT advisory or failure.

I have to confess to a similar omission - rear tyres very worn (advisory) and now changed.

EV MOT Failure rate - alan1302

This means that routine checks of tyre pressure are non-existent on newer cars (there is no need) and excessive tyre wear never identified until MoT advisory or failure.

I was thinking it maybe the case that a lot of Ev's are company cars and so not looked after as well either which may be why they are more likely to fail on the tyres.

EV MOT Failure rate - sammy1

"""I suspect given their age all EVs are fitted with tyre pressure monitoring systems whereas most older ICE are not.

This means that routine checks of tyre pressure are non-existent on newer cars (there is no need) and excessive tyre wear never identified until MoT advisory or failure.

I do not think this is fact. All tyres will loose pressure over a period and those with a TPMS with the same tyres will probable loose pressure at the same rate. The system is perhaps only any good with slow punctures. My experience of previous cars without the system is that they have lost tyre pressures overtime and frequent checking often means I had to inflate to the correct pressures As far as ""excessive" wear is concerned well the owner should pick up on this and not the MOT. What happens in the 3 years prior to any MOT or am I missing the point here

EV MOT Failure rate - Adampr

What happens in the 3 years prior to any MOT or am I missing the point here

You're missing the point. 90% of people pay no attention at all to their tyres and 95% never check the pressures. Obviously, I made those figures up, but I don't know a single person that does routine checks;they just drive it until it breaks.

EV MOT Failure rate - Andrew-T

<< I made those figures up, but I don't know a single person that does routine checks;they just drive it until it breaks. >>

I do routine checks every few weeks on both our elderly cars, because I always have. Not just tyre pressures but all fluids under the bonnet. 99% of the time nothing changes much, but there is always a small chance that a leak will develop and I may be able to spot it.

But rumour has it that many young drivers don't bother these days, perhaps because the car may not actually be theirs.

EV MOT Failure rate - sammy1

What happens in the 3 years prior to any MOT or am I missing the point here

You're missing the point. 90% of people pay no attention at all to their tyres and 95% never check the pressures. Obviously, I made those figures up, but I don't know a single person that does routine checks;they just drive it until it breaks.

You cannot tell me that a car doing say 20k miles in the 3 years before its MOT or any other time does not need regular tyre checks. They form the basis of checks. Even with TPMS the system only works when a 20 percent fall or so is detected. So you can easily be running on 4 under inflated tyres increasing wear and fuel consumption

EV MOT Failure rate - badbusdriver

You cannot tell me that a car doing say 20k miles in the 3 years before its MOT or any other time does not need regular tyre checks. They form the basis of checks.

He isn't saying the cars don't need it, he is saying owners don't do it.

Even with TPMS the system only works when a 20 percent fall or so is detected. So you can easily be running on 4 under inflated tyres increasing wear and fuel consumption

But my own experience with TPMS, in our Suzuki Ignis and Honda Jazz before it, is that they are way more sensitive to pressure drops than that.

EV MOT Failure rate - mcb100
If TPMS allowed a pressure loss of 25% before alerting the driver, I’d be wanting to have a stern word with it.
I’m not sure if there any levels of legislated accuracy, but every one I’ve ever used had flagged up way before 25%.
EV MOT Failure rate - sammy1
If TPMS allowed a pressure loss of 25% before alerting the driver, I’d be wanting to have a stern word with it. I’m not sure if there any levels of legislated accuracy, but every one I’ve ever used had flagged up way before 25%.

It is here in this. Michelin say 20% others if you google say up to 25. Quite easy to check a tyre and it has lost say 6psi 20% of 30 which is a low pressure these days just for example

""Learn All About Tyre Pressure Sensors (TPMS) | Kwik Fit (kwik-fit.com)

Kwik fit give a loss of 6 - 7 PSI which is 20% at 30PSI or 35psi whichever.

Here is another link about tyre pressures reducing for those who might not check their tyres or rely on TPMS 3 to 8 PSI

National Tyres and Autocare - TPMS Service / Valve Replacement

EV MOT Failure rate - Bromptonaut

If people are not checking tyres then there are millions of cars on UK roads with defects - whether pressure or tread. Even with company cars where the driver is required to check pressures i'll bet it doesn't happen Even if they sign a chit to say it's been done they're still not on top it.

Most is doing some heavy lifting there. Accuracy of direct systems using actual pressure at the valve is likely to be significantly better than indirect which uses ABS sensors to detect relative differences between wheels.

[previous quoted text now deleted following removed post above]

Edited by Xileno on 05/08/2023 at 11:37

EV MOT Failure rate - Xileno

Some edits made following unnecessary comments.

If someone posts something that you believe might be factually incorrect, then post a link to an authoritative source rather than inflaming matters.

Mods

EV MOT Failure rate - sammy1

""""You cannot tell me that a car doing say 20k miles in the 3 years before its MOT or any other time does not need regular tyre checks. They form the basis of checks.

He isn't saying the cars don't need it, he is saying owners don't do it. """

The reply is too a rather silly and unsubstantiated claim and other replies refer to the same

Regarding my 20% on TPMS see my answer below. TPMS systems also have a legal requirement not to be too sensitive as they would be going off all the time. My own personal experience is they are not worth the hassle for the diligent owner.

EV MOT Failure rate - _

If "YOU" in the general sense don't check tyres oil etc in your car on a regular basis, either because you cannot be a***sed or otherwise, then that is your problem.

If you want to 1, stay alive. check your vehicle.

As Mr Eastwood said, Do you feel lucky..

I agree with the earlier sentiment that a vast vast majority of people don't bother to check.

We have a near aquaintance who had a mini on PCP, never checked the oil, 20,000 mile sevices,

Boom.

Edited by _ORB_ on 05/08/2023 at 15:23

EV MOT Failure rate - sammy1

If "YOU" in the general sense don't check tyres oil etc in your car on a regular basis, either because you cannot be a***sed or otherwise, then that is your problem.

If you want to 1, stay alive. check your vehicle.

As Mr Eastwood said, Do you feel lucky..

I agree with the earlier sentiment that a vast vast majority of people don't bother to check.

We have a near aquaintance who had a mini on PCP, never checked the oil, 20,000 mile sevices,

Boom.

I cannot agree that the ""vast majority"" don't bother to check their cars. Just take tyres> They all lose pressure so even in a year most would appear flatter than usual when parked so you would think there would be a compelling need to pump them up I have the TPMS but going any distance I always check them and reset the TPMS. There is sometimes a discrepancy in the old setting from when it was set proving that the tyres have lost some pressure If the system should activate on the journey then I know there is a genuine problem and not just degradation over time. I can well agree that some do not check anything from one service to another and some not service at all. When your car is serviced I wonder how many check the tyre pressures for you not many I would guess.

Regarding the MINI I would guess that your friend also ignored the oil warning light which still allows a decent margin of oil providing you do top up

EV MOT Failure rate - Bromptonaut

I cannot agree that the ""vast majority"" don't bother to check their cars. Just take tyres> They all lose pressure so even in a year most would appear flatter than usual when parked so you would think there would be a compelling need to pump them up

You're thinking like a motorist.

Most are just folks with a car. No more interest than in a washing machine or dishwasher.

Just before the pandemic I got together with a couple who'd met through a house/flat share I was also part of. They spoke of their 1983 Austin Allegro that used oil like it was going out of fashion. Oil bottle kept in boot; engine dipstick used daily.

Mentioned my son risking knacking his then Pug 107 which used a bit, maybe 500ml, between services, and him not keeping an eye on it.

They were almost offended - didn't check their own car between services and were not sure how to!!

Both of us check oil and coolant, the latter visually through the bottle, regularly and whenever filling the screenwash bottle.

The 'lingo has a screenwash pump that would run a power shower; no danger of more than three weeks between refills.

EV MOT Failure rate - alan1302

The 'lingo has a screenwash pump that would run a power shower; no danger of more than three weeks between refills.

Our Combo Life is like that - I'm forever having to top it up...reading this has just reminded me I need to get some more.

EV MOT Failure rate - Xileno

Oh yes they exist in my family. One of my brothers wouldn't know what a screwdriver was for. It took ages for me to convince him the MOT was not a service and that was something additional.