New car slower than old one

Assuming that there are no actual faults affecting performance, the two things that initially spring to mind are either a relatively tight, low-mileage engine (if applicable?) or a more accurate speedo - or maybe a combination of the two??

Alternatively, maybe slightly different gearing??

I belive that the new one is 150lbs heavier. More sound deadening, thicker safety glass, bigger dimensionally. More mass=less speed!

Ron

Ron

The 2005 is bigger, not the 2004. /per

In my 2 year Focus 2L Ghia, the speedo reads 34 when the gps tells me that I am doing 30. The speedo consistently is 'fast' compared with the GPS.

I tend to believe in the cesium clocks on the GPS than the speedo on the car. HOWEVER, I use the car speedo if a police car tailing me!!!

In alt.autos.ford.focus Donald Gray :

Exactly, GPS should be correct concerning speed withing +/- 0.1 km/h. The speedo on my Focus shows about +5% more then GPS, a pretty good value for some Ford speedometer. In addition it has the annoying feature that it stops shortly before 220 km/h, while revs are still going up.

GPS vs. speedo comparison is similar in my experience too - speedo reads

Just to clarify my earlier comments with regard to the OP, the more accurate speedo reasoning relates to the newer car - if the one in the old car over-read a lot and the one in the new car over-reads less, then this could give the OP the impression that the new car is slower over his chosen performance test (especially if the new car is also a bit quieter and smoother to drive than the old one too)

Mark Allen schrieb:

Hi I don´t know about the law in the USA, but here in Germany a speedo is only allowed to over-read the real speed by about 10% of the max. speed indicatable, but not a bit slower then the right speed. This leads to speedos with a over-read of about 2-10 km/h, bad ones until 15-20 km/h. About 5 is normaly. bye Jupp

In message , Michael Heiming wrote

While travelling on a straight road and at constant speed the GPS always reports a road speed that is 10 percent below that reported by my 2001 UK (Geman) Focus speedometer (over the range 30 to 80 miles per hour)

In alt.autos.ford.focus Alan :

A bit much, perhaps you have mounted another wheel/tire combination then your Focus is programmed? Can be adjusted from your Ford dealer.

In message , Michael Heiming wrote

Standard Ford wheels and recommended size of tyres (same brand/model of tyre as originally fitted to car)

I think it's ok, my german Focus' speedometer shows more km/h than i'm really driving. I measured it and the speedometer shows ca. 7 km/h more than I'm actually driving.

In alt.autos.ford.focus Thorsten Gartung :

Depends, at least with my Focus on the speed: speedometer 100 km/h - GPS 95 km/h speedometer 200 km/h - GPS 190 km/h

(Sadly speedometer simply stops short before 220 km/h)

Anyway looks like +5%, wouldn't really care about the 10%, but his dealer should be able to check if the tire dimension mounted is programmed correctly, if he's curious.