Warranty ran out

Jakg

Zandoni wrote: »

Now if you really want to get technical your speedo over records you MPH and miles by at least 3%. So that means you haven't done 60k yet.

A - it's anywhere from 0-10%.

B - most cars record the mileage as accurately as possible, but the actual speed they display include the over-read - my car certainly does.

Zandoni

Jakg wrote: »

A - it's anywhere from 0-10%.

B - most cars record the mileage as accurately as possible, but the actual speed they display include the over-read - my car certainly does.

How is the mileage diplayed more accurately, as far as I know they are linked.

Jakg

Zandoni wrote: »

How is the mileage diplayed more accurately, as far as I know they are linked.

On my car the over-read is done in software - the car knows exactly how fast it's going to accurately record speed / MPG / distance travelled - but for display on the speedo an over-read is added. If you drive along for a certain distance at a certain speed you'll notice you haven't travelled quite as far as you should of done...

alwal0307

Just recieved a phone call from dealer,Chrysler will pay for new pump module £1500 and i have to pay for Labour/aux parts eg new filters oil joints etc £600.

bod1467

A result of sorts.

alwal0307

will only know if any more damage to engine when it is rebuilt I am expecting turbo has gone, then it will be asking Chrysler again.

Zandoni

Jakg wrote: »

On my car the over-read is done in software - the car knows exactly how fast it's going to accurately record speed / MPG / distance travelled - but for display on the speedo an over-read is added. If you drive along for a certain distance at a certain speed you'll notice you haven't travelled quite as far as you should of done...

I'm not saying you are not correct, who knows what they can do now with the on board computers. But I do wonder if you can actually notice it, you would have to travel a long distance at a constant speed to be able to check it.

bod1467

Hop onto a motorway at night, set cruise control for 60 mph, note odometer, drive for 1 hour, note odometer. Seemples.

Zandoni

bod1467 wrote: »

Hop onto a motorway at night, set cruise control for 60 mph, note odometer, drive for 1 hour, note odometer. Seemples.

Naaaaaa, wouldn't be accurate enough

I would like to know for sure though if some or all modern cars have an odometer that is more accurate than the speedo. They certainly would have been linked in the old days with cable driven units.

If you think about it manufacturers would be happy if the mileage reading was slightly high. Would look like it was better MPG, more servicing and shorter warranty periods

Flyboy152

Zandoni wrote: »

If you want cold hard facts do some googling, lots of info about.

It's common sense really, a speedo can't under read as it will give drivers a get out clause with speeding fines. Also tyre wear is a consideration.

The OP doesn't seem interested so I'm not going to bother researching.

There is absolutely no evidence anywhere which states that speedometers and odometers overread by at least three per cent.