Latest up date on the MG5 from James 143000 mile and nothing gone wrong

[Les burrows]

What more can you want
Les

 

[Archev]

What a machine ?

 

[EmGeeGuy]

What a machine ?

Well, given James reports that his MG5 is still running on the original front pads & discs I was a bit crestfallen that my MG5 cost me nearly £700 to replace them as they failed the first MOT at 33000 miles. I was advised ironically that using the regenerative braking "too much" somehow caused the discs to warp! Didn't see the offending articles after they were replaced.

 

[Archev]

Well, given James reports that his MG5 is still running on the original front pads & discs I was a bit crestfallen that my MG5 cost me nearly £700 to replace them as they failed the first MOT at 33000 miles. I was advised ironically that using the regenerative braking "too much" somehow caused the discs to warp! Didn't see the offending articles after they were replaced.

My car has just passed its first MOT at 31000 miles with no advisories. I was £166.84 for the MOT, the third service and of course the next year’s AA cover. I don’t think the discs and pads are involved in any way with regenerative braking.

 

[Verdigris]

Just had my first MOT. No problems at all. I'm always more worried about rusty discs, as I've had two ICE cars fail on that, so no regen and lots of "discretionary" braking on the way to the test centre.

 

[Alibro]

Well, given James reports that his MG5 is still running on the original front pads & discs I was a bit crestfallen that my MG5 cost me nearly £700 to replace them as they failed the first MOT at 33000 miles. I was advised ironically that using the regenerative braking "too much" somehow caused the discs to warp! Didn't see the offending articles after they were replaced.

It's very doubtful they warped but could be badly corroded by lack of use. I've seen a couple of Youtubers recommend a good hard stamp on the brakes at least once per month and maybe more often in the winter when there is salt on the roads.
In normal use the brakes don't come in until the car is almost at a standstill.

 

[5teep]

An interesting snippet I took from this video is that the long range battery is a straight swap out for the standard range one. No rewiring or reprogramming.

Someone with an SR could possibly find a written off LR and get a cheap upgrade.

 

[Archev]

An interesting snippet I took from this video is that the long range battery is a straight swap out for the standard range one. No rewiring or reprogramming.

Someone with an SR could possibly find a written off LR and get a cheap upgrade.

Indeed and that doesn’t happen often these days ?

 

[johnd973]

Well, given James reports that his MG5 is still running on the original front pads & discs I was a bit crestfallen that my MG5 cost me nearly £700 to replace them as they failed the first MOT at 33000 miles. I was advised ironically that using the regenerative braking "too much" somehow caused the discs to warp! Didn't see the offending articles after they were replaced.

That's a surprise, ours passed its first MOT last month at 35k miles with no advisories. Brakes show minimal signs of wear. There's no link between regenerative breaking and friction brakes so if I was you I'd be asking the garage some uncomfortable questions and probably not taking my car there again

 

[5teep]

Regen braking doesn't involve the brakes as far as I know, it's all done by the motor isn't it?

 

[Verdigris]

I suppose the charitable interpretation might be that the garage person misspoke and said distortion, when they meant corrosion, the latter being magnitudes more likely. However, being as they didn't show the old parts to the customer, a more cynical interpretation might be in order.

 

[Archev]

Regen braking doesn't involve the brakes as far as I know, it's all done by the motor isn't it?

Yes I’m pretty certain that’s the case. It definitely feels that way to drive and at 31000+ my brakes all look rear perfect. On max regen and eco mode I hardly ever use the foot brake (except with that Range Rover the other night - but we missed us ?)

 

[Lovemyev]

Brakes show minimal signs of wear.

This minimal fiction pad wear, is mainly down to the strong effects of regen braking, if used in the strongest mode.
In a normal ICE vehicle, approx 80% of the friction braking is done by the fronts and only approx 20% by rears.
Therefore the rear brakes are rarely over worked.
This is clearly evident when you inspect the fiction brake pad material supplied on a set of new front pads, then compare this to a set of new rear pads ( double ).
When you then factor in the additional high regen braking effects produced from the motor of EV when slowing down, this then results in a knock on effect from the driver requiring MUCH less assistance from the friction brakes.
This then means that the rear brakes are pretty much on holiday all of the time.
Lack of use then facilitates premature rust forming on the discs and the sliding action of the brake callipers can be affected by this lack of use.
Presenting itself sometimes as a sticking handbrake when released, or squealing from the pads as they stick and bind on the discs.
Brake services are very common and proven requirement on EV's as time marches on, even more so than on an ICE vehicle, because of the reasons stated above.
Low mileage users do tend to suffer more from this situation than high milage users unfortunately.
This can be confirmed in James' case, as the car is never still !.

 

[Alibro]

This minimal fiction pad wear, is mainly down to the strong effects of regen braking, if used in the strongest mode.
In a normal ICE vehicle, approx 80% of the friction braking is done by the fronts and only approx 20% by rears.
Therefore the rear brakes are rarely over worked.
This is clearly evident when you inspect the fiction brake pad material supplied on a set of new front pads, then compare this to a set of new rear pads ( double ).
When you then factor in the additional high regen braking effects produced from the motor of EV when slowing down, this then results in a knock on effect from the driver requiring MUCH less assistance from the friction brakes.
This then means that the rear brakes are pretty much on holiday all of the time.
Lack of use then facilitates premature rust forming on the discs and the sliding action of the brake callipers can be affected by this lack of use.
Presenting itself sometimes as a sticking handbrake when released, or squealing from the pads as they stick and bind on the discs.
Brake services are very common and proven requirement on EV's as time marches on, even more so than on an ICE vehicle, because of the reasons stated above.
Low mileage users do tend to suffer more from this situation than high milage users unfortunately.
This can be confirmed in James' case, as the car is never still !.

Also gentlemen/lady drivers that try to give their passengers a smooth drive and always brake gently will have bigger issues with EV brakes corroding.

Hooligans like myself probably less so.