Anyone getting the manufacturer's quoted mpg or more?

[guest255]

Interested to hear from people who have got high mpg and under what driving conditions.

[Geoffers]

Well, my current Jazz has averaged 45.7 mpg from new (14.5k miles) mostly on BP 95 octane. This is based on brimming the tank every fill-up and calculating the average. Best tankful was in France in May '10 when we got 51.2 mpg on supermarket fuel! That particular trip included a climb to 1500 metres in the Alps where we had a white out with the snow!

We use the running display average only as a guide!

[Berisford]

We had our CVT Jazz from new in July 2004 until October 2010.

In those 6.25 years it did 58400 miles on supermarket (mainly Tesco) fuel and using brim to brim calculations from day 1 it did a genuine 48.88mpg average.

The dash readout was always about 10% optimistic!

[guest1844]

I've logged every fill up in all my cars. Best I've ever had is 56 (calculated tank fill-to-fill). This is under perfect conditions - 15 mile commute, country roads, steady 40-45mph, summer).

I reckon, taking 55 as a realistic best, make the following subtractions:
-5: motorway 70mph
-5: winter
-10: cold engine (first couple of miles of a journey)
-10: hard urban (though a good driver will do a lot better)
-5: aircon (summer), -1 aircon (winter)
-5: maintenance (sticking brakes, tyre pressures, tracking etc)

At the moment I'm getting 45mpg, on a 20-mile motorway commuter in winter. A relative who does all short cold urban gets 35 according to the display.

Nearly all my fuel is Shell. I have used VPower, no change in mpg, though does run more smoothly. Very subjective this, but I always think BP gets a lower mpg, in all my cars - plus its the most expensive. Since it's all the same fuel feedstock, but different additive concoctions per brand, then what does that tell you? (Note VPower and Ultimate are made differently, they have a different feedstock (I work in an oil refinery)).

[DV]

I`ve a Garmin 1690 GPS and I`m wondering if anyone would have their new EcoRoute HD device? It has to be connected to the onboard OBDII connector to communicate with the ECU and transmits the data via bluetooth to the GPS. It can show real time the car`s fuel economy too (plus can read out about 4000 engine fault codes and reset it, shows the gauges, etc. - different at each car manufacturer how many sensors are monitored). The main point now is about the real time fuel economy to save fuel.
Here are some links:
The device:http://gbr.garmin.com/ecoroute-hd/
Compatible Garmin sat navs: http://gbr.garmin.com/ecoroute-hd/compatibilty/compatibility.html
Vehicle compatibility: http://www.garmin.com/uk/ecoroute-hd/compatability

Review: http://www.pcmag.com/article2/0,2817,2362648,00.asp

I`m hardly thinking to get one from here: http://www.lemon-digital.co.uk/products.php?Product=862&Title=Garmin+ecoRoute+HD+Onboard+Computer&SubCatID=113

Last week I was driving only on motorway beetween fill ups (vPower) and I managed 57.2 mpg, the onboard computer showed 59.4 mpg. I never was driving faster then 60mph (High Wycombe - Basildon). I noticed driving in town gives more inaccurate on board mpg result than driving mainly on motorway. I think this is my best result in the last 5 years because before I wasn`t concerned that much about the fuel price.

Any thoughts about the EcoRoute HD?

[culzean]

I`ve a Garmin 1690 GPS and I`m wondering if anyone would have their new EcoRoute HD device? It has to be connected to the onboard OBDII connector to communicate with the ECU and transmits the data via bluetooth to the GPS. It can show real time the car`s fuel economy too (plus can read out about 4000 engine fault codes and reset it, shows the gauges, etc. - different at each car manufacturer how many sensors are monitored). The main point now is about the real time fuel economy to save fuel.

Vehicle compatibility: http://www.garmin.com/uk/ecoroute-hd/compatability

Review: http://www.pcmag.com/article2/0,2817,2362648,00.asp

Any thoughts about the EcoRoute HD?

Yes I have, this info was taken from Garmin 'vehicle compatibility' info (diesel insight and Jazz, I don't think so)

MAKE         MODEL               PETROL                DIESEL                     TESTED
Honda   Insight Hybrid     2001 and above       2004 and above         2009
Honda   Jazz                   2001 and above     2004 and above         2010

Would you trust technical information from a company that claims to have tested their product on a diesel Jazz or insight Hybrid??

[DV]

You got the point!