Does your Maruti Swift speedo over-read? - Team-BHP

phamilyman · 22nd October 2009, 11:43

My VDi is optimistic by about 7-8%

I got myself the Holux yesterday. I was aghast to see that its clearly having a +ve error!

I've noticed it consistently over almost 50+km, so want to know what others have felt. For the naysayers, fret not, a screen shot + pic will come by tomorrow.

I want to benchmark it this weekend against Punto, Palio and Vista.

@Architect/Anshuman: please to meetup boys! Any vista owner from gaon?

Eddy · 22nd October 2009, 11:53

Measurement with respect to my E71 GPS also showed a similar error.

suman · 22nd October 2009, 11:55

Hitanshu, so you expected zero error in your Swift speedo or is this way higher than what you thought it would be?

And why would you like to benchmark?

im_srini · 22nd October 2009, 12:24

Quote:

Originally Posted by phamilyman

My VDi is optimistic by about 7-8%. I got myself the Holux yesterday. I was aghast to see that its clearly having a +ve error !

Since you haven't mentioned it explicitly can we presume that your VDi is still on stock tires ?

clevermax · 22nd October 2009, 12:27

Many cars' speedo over read. The error goes up as the speed increases. This is most pronounced in Marutis and Hyundais I think.

Once I noticed this when two of our cars going together at the same speed, Palio speedo read 80 Kmph while the Santro speedo read almost 90. (Communication through cell phone

)

I noticed that my Punto's speedo also has a positive error, compared to Palio's.

shankar.balan · 22nd October 2009, 12:54

possibly all road going cars speedometers over or under-read.
many things can contribute - air-pressure in the tyres, temperature, road conditions, tyre size differences (up-sizing/downsizing), alloy wheels vs stock wheels,
state of maintenance of the bearings and a host of other such things.
I would say that the variance would normally be +/- 5%-7% at a conservative estimate.

Eddy · 22nd October 2009, 12:59

And as long as its on the positive side, why do you worry ?

jav · 22nd October 2009, 13:05

After upsizing my indica tires from 165 to 185 the speedo shows exact speed as my GPS.

cooldude1988765 · 22nd October 2009, 13:10

Even laura, superb accord also over read. I think these speedos are designed keeping in mind different tyre profiles and once the cars come to India we get super skinny tyres so they over read.

Technocrat · 22nd October 2009, 13:10

Tau, I am surprised to see you surprised, didnt we have such discussion during the bike days? Did you expect it to be lower or absent?

phamilyman · 22nd October 2009, 13:19

Quote:

Originally Posted by suman

Hitanshu, so you expected zero error in your Swift speedo or is this way higher than what you thought it would be?

And why would you like to benchmark?

Because I can. . . because I'd like to know! And because at some level it reminds me that on this forum people earlier used to mention that palio MJD gets 16-17 or so only (except Bubby), while swift gets 19-20 easily.

If palio doesn't overread then that knowledge is useful.

Quote:

Originally Posted by clevermax

Many cars' speedo over read. The error goes up as the speed increases. This is most pronounced in Marutis and Hyundais I think.

Once I noticed this when two of our cars going together at the same speed, Palio speedo read 80 Kmph while the Santro speedo read almost 90. (Communication through cell phone

)

I noticed that my Punto's speedo also has a positive error, compared to Palio's.

ahh. Interesting.

Quote:

Originally Posted by shankar.balan

possibly all road going cars speedometers over or under-read.
many things can contribute - air-pressure in the tyres, temperature, road conditions, tyre size differences (up-sizing/downsizing), alloy wheels vs stock wheels,
state of maintenance of the bearings and a host of other such things.
I would say that the variance would normally be +/- 5%-7% at a conservative estimate.

I knows. But my car is stock. And pressure was checked on Monday night (incl my own gauge)!

Quote:

Originally Posted by Eddy

And as long as its on the positive side, why do you worry ?

Why not be aware?

Quote:

Originally Posted by cooldude1988765

Even laura, superb accord also over read. I think these speedos are designed keeping in mind different tyre profiles and once the cars come to India we get super skinny tyres so they over read.

I'm not sure of that.

@Techno: I am aware. I am just surprised that Maruti is taking the Bajaj way, not the Hero honda way.

tsk1979 · 22nd October 2009, 13:21

Speedo overread is present in all cars(5-7%)
However your FE readings will be incorrect if your odo overreads
For example Original Palio Odo under-read. Due to which people read FE as 1-2kmpl lower than what it actually was!

esteem_lover · 22nd October 2009, 13:21

It's the manufacturer's way of making you feel good.

woof · 22nd October 2009, 13:23

Yes, it does by around 5-10%.

Even my Hyundai Santro & i10 over read by around 5%.

Bubby · 22nd October 2009, 13:59

Quote:

Originally Posted by phamilyman

Because I can. . . because I'd like to know! And because at some level it reminds me that on this forum people earlier used to mention that palio MJD gets 16-17 or so only (except Bubby), while swift gets 19-20 easily.

Hey Hitanshu... lets test it on my MJD, but not on weekend yaar.

I am game for it for today and tomorrow, today any time between now and 2100 hours, tomorrow any time between 0900 - 2100 hours.

Let me know.

22nd October 2009, 11:43	#1 (permalink)
phamilyman Senior - BHPian Join Date: Jul 2007 Location: Ask me, no? Posts: 2,866	Does your Maruti Swift speedo over-read? My VDi is optimistic by about 7-8% I got myself the Holux yesterday. I was aghast to see that its clearly having a +ve error! I've noticed it consistently over almost 50+km, so want to know what others have felt. For the naysayers, fret not, a screen shot + pic will come by tomorrow. I want to benchmark it this weekend against Punto, Palio and Vista. @Architect/Anshuman: please to meetup boys! Any vista owner from gaon?

22nd October 2009, 11:53	#2 (permalink)
Eddy Team-BHP Support Join Date: Apr 2007 Location: Delhi Posts: 2,186	Measurement with respect to my E71 GPS also showed a similar error. __________________ Car is no longer a luxury; parking space is. Swift VDI(ABS) Sep 07 - 53K Kms Ford Ikon Flair Sep 04 - 70K Kms

22nd October 2009, 11:55	#3 (permalink)
suman Distinguished - BHPian Join Date: Sep 2005 Location: Gurgaon Posts: 3,522 View My Garage	Hitanshu, so you expected zero error in your Swift speedo or is this way higher than what you thought it would be? And why would you like to benchmark? __________________ "Unborn TO-MORROW and dead YESTERDAY, Why fret about them if TO-DAY be sweet!" - The Rubaiyat of Omar Khayyam

22nd October 2009, 12:27	#5 (permalink)
clevermax BHPian Join Date: Jun 2006 Location: Kollam, Trivandrum Posts: 458 View My Garage	Many cars' speedo over read. The error goes up as the speed increases. This is most pronounced in Marutis and Hyundais I think. Once I noticed this when two of our cars going together at the same speed, Palio speedo read 80 Kmph while the Santro speedo read almost 90. (Communication through cell phone ) I noticed that my Punto's speedo also has a positive error, compared to Palio's. __________________ FIAT.............................o Palio 2006................. ¯¯/ Grande Punto 2009..../¯¯ Last edited by clevermax : 22nd October 2009 at 12:29.

22nd October 2009, 12:54	#6 (permalink)
shankar.balan Senior - BHPian Join Date: Apr 2008 Location: Bangalore Posts: 1,558 View My Garage	possibly all road going cars speedometers over or under-read. many things can contribute - air-pressure in the tyres, temperature, road conditions, tyre size differences (up-sizing/downsizing), alloy wheels vs stock wheels, state of maintenance of the bearings and a host of other such things. I would say that the variance would normally be +/- 5%-7% at a conservative estimate. __________________ god helps those who help themselves...

22nd October 2009, 12:59	#7 (permalink)
Eddy Team-BHP Support Join Date: Apr 2007 Location: Delhi Posts: 2,186	And as long as its on the positive side, why do you worry ? __________________ Car is no longer a luxury; parking space is. Swift VDI(ABS) Sep 07 - 53K Kms Ford Ikon Flair Sep 04 - 70K Kms

22nd October 2009, 13:05	#8 (permalink)
jav BHPian Join Date: Apr 2007 Location: Blr Posts: 63	After upsizing my indica tires from 165 to 185 the speedo shows exact speed as my GPS.

22nd October 2009, 13:10	#9 (permalink)
cooldude1988765 BHPian Join Date: Feb 2006 Location: Hyderabad Posts: 885	Even laura, superb accord also over read. I think these speedos are designed keeping in mind different tyre profiles and once the cars come to India we get super skinny tyres so they over read. __________________ I never thought it was humanly possible, but this both sucks and blows. - Bart Simpson

22nd October 2009, 13:10	#10 (permalink)
Technocrat Team-BHP Support Join Date: Feb 2004 Location: Pune Posts: 7,860 View My Garage	Tau, I am surprised to see you surprised, didnt we have such discussion during the bike days? Did you expect it to be lower or absent? __________________ The Holy Trinity: Traction, Torque and Tarmac

22nd October 2009, 13:21	#12 (permalink)
tsk1979 Team-BHP Support Join Date: Feb 2005 Location: New Delhi Posts: 11,286 View My Garage	Speedo overread is present in all cars(5-7%) However your FE readings will be incorrect if your odo overreads For example Original Palio Odo under-read. Due to which people read FE as 1-2kmpl lower than what it actually was! __________________ Reclaimed, wrung dry and recycled....!

22nd October 2009, 13:21	#13 (permalink)
esteem_lover Senior - BHPian Join Date: Jul 2006 Location: Madras Posts: 6,277 View My Garage	It's the manufacturer's way of making you feel good.

22nd October 2009, 13:23	#14 (permalink)
woof BHPian Join Date: Jul 2007 Location: Delhi Posts: 78	Yes, it does by around 5-10%. Even my Hyundai Santro & i10 over read by around 5%. __________________ Swift Vdi (Sep 2007) - 48000 kms \| i10 Magna Kappa (Oct 2008) - 4000 kms \| Santro Xing XG (Nov 2004) - 71000 kms

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