Odometer Accuracy of Stock Autos

**gulliver** · March 5th, 2004 12:25 AM

hi!

unang-una, ok new look ng tsikot

may tanong lang po...yung mga odometer ng stock factory set-up vehicles, gaano ba ka accurate sila? does anyone here know?

maraming salamat!

**ian_rex** · March 5th, 2004 01:57 PM

sir, in my opinion, it was fairly accurate. kasi maufacturer's specs yun e. saka ano naman ang reason para mag manufacture sila ng hindi accurate na odometer? except na lang siguro kung may factory defect yung odometer unit. kasi kung hindi accurate ang odometer, it could only mean that in event of maintenance schedules, kung hindi accurate ang odometer reading, ibig sabihin sila rin ang magkakaproblema, lalo na kapag nagka-sira yung auto nang wala pa sa panahon. =>

thanks!

**OTEP** · March 5th, 2004 04:26 PM

Medyo 'ballpark' ang figure ng odometer. It is somewhat accurate. Pero not very. Kasi iba iba ang tire sizes at gear ratios depending on the market and powertrain.

Try matching it with a GPS measurement of distance. Minsan off by 5% or so.

**yebo** · March 5th, 2004 04:30 PM

accurate to a point, as in + or - several meters per kilometer. that's accurate enough no? if you want more accuracy than that then i'll venture to guess your profession. surveyor ka ng dpwh?

joke lang!

**OTEP** · March 5th, 2004 04:33 PM

Tama si yebo. It is accurate to a point. It is accurate enough for what you need it for (maintenance, etc.).

Pero hindi mo pwedeng ipang-survey ng lupa.

**gulliver** · March 5th, 2004 09:42 PM

thanks!

otep,

i've actually measured my speed on my GPS vs my truck's speedometer, but that was after i changed to bigger tires...just to see anong effect ng tire change (i assumed reasonably accurate ang factory eqpt). the gps read-out recorded a speed 8-10 kph higher than that on my speedometer...so i assumed the distance would also be off by a number extrapolated from the difference (but did not actually measure it which i guess i should have)

anyway, i was hoping someone who works in a car plant would post a reply

but this is ok, salamat uli!!!

**OTEP** · March 5th, 2004 09:51 PM

Check out issues of Road and Track magazine.

They measure speedometer accuracy on their test cars.

Just to give you an idea how far it is off.

Yung mga Porsce speedometers sobrang off. Presumably to further enlarge the ego of their drivers.

**yebo** · March 5th, 2004 11:03 PM

ako may speedometer sa katawan. pag mabilis na takbo ko umaakyat betlog ko. pag nasa lalamunan ko na yan maximum speed ko na hehe! aaaakkhh! sabay release ng accelerator hehehe!