my inlaws just purchased a new range rover turbo diesel, i think its a 2.0
this economy button it has, cuts off the engine in traffic and as soon as you press the clutch, engine fires up again. gives me a bloody headache, stop start stop start
does this actually make a big difference in saving pennys for diesel, i wouldnt have thought it would use alot of fuel just idling?
when its below 0 degrees it doesnt do this, to maintain a good temperature in the car

 

Don't know anything about the RR, and I'd be surprised at a 2.0 diesel, but StopStart is the latest big thing in the industry, and it gives big mpg and CO2 improvements.

 

depends on how long you are stopped for, obviously.

 

There's a switch on the dash to turn this stop start off, knowing the Range Rover reliability this wil go wrong and leave you sitting at the traffic lights with a dodgy starter motor.

 

so starter motors and batterys are going to be annual consumable service items on new cars now are they??

yeah youll save £300 a year in fuel but gain £400 a year in servicing plus the co2 emitted in making the replacement parts probably way exceeds the co2 saved by having the stopstart feature.

Its another good ploy to slow down the roads and force us to have newer cars more often as make them even more complicated and hard to service. think about how annoying a 10 year old stopstart car would be on and old ford the engine would start as the lights go to red again

 

You can easily by-pass this feature.

And it will be a 3.0 engine minimum in a Range

 

works really well actually.

Even Ferrari offer this on the California.

Emmisions and economy are big issues worldwide

 

Well i hope Land Rover have uprated the start motor then or it will be a consumable item, it would piss me off the engine stopping then stating every 5 minutes, there is only one way to save fuel and thats adjust the nut on the steering wheel

 

you don't bypass it, you can just select whether to use it or not in the ECM

nonsense. the driver is a major factor in fuel consumption, but clearly stopping an engine will save fuel.

 

I'm guessing you haven't driven a car with modern stop-start then.
Seriously, what good does an idling engine do you while you are at the lights etc?

I can't comment on the RR system but I can say that our system is very good and I don't notice any lag from deciding to go and the engine being available.

 

the new range rovers dont have stop start mate, think your on about the freelander 2 td4 its a 2.2ltr diesel. very reliable little motor i work on them everyday and would rather have one than a poor unreliable range rover. they use a different type of starter motor for this new system that as far as im aware hasnt gone wrong yet, well ive never seen 1 go tits up lol. its still a shit system tho as it doesnt work when youve got certain things turned on (aircon ect).

 

how does that make it a shit system? that's how it's programmed to work. the a/c compressor is engine driven - how do you expect that to keep going if the engine has stopped? not to mention the near 100A that the fans can draw?

 

Its not that new. BMW have had this for 4 years now.

 

i think that citroen were the first.

 

60mpg on our company New Passats with stop start.

.

 

true but is it a genuine saving globally or just another fad like the prius?? Its through life CO2 emissions that are important rather than just direct fuel economy.

It would be interesting to see some figures for stopstart for through life info compared to a normal car. If the extra production, servicing, disposal and parts use more co2 than the feature saves on the cars projected life then its pointless.

 

if every car had a fuel computer in £ and pence it would save a fortune
some people think they are being efficient (my wife) but are way off, i used to leave my cars on ave con and try to get absolute maximum fuel savings, the next day 'd be flat out everywhere mind but all that practise made me good at what saves fuel
its not aboutbeing slow and holding everyone up, i give it poke to get to cruising speed and let it run freely, 1.6 16v scenic currently giving ave 41.3 mpg on this tank
my '10 transit gets 500 miles to a £95 tank full tho

 

its not just about the driver though, its manufacturing process, length of life of the car, disposal etc that are all important. ie the full life co2.

I remember reading about the life co2 emissions and on most non hybrid older cars fuel accounted for 80% of the life co2 emissions where as based on estimates at the time, the toyota prius fuel costs accounted for 2% of its life co2.

Now its all very well having efficient hydrid cars etc saving fuel costs but if the overall life co2 is higher than normal cars then whats the point? all you are doing is moving around where the co2 is released in the cars life cycle rather than reducing it.

 

stuff like this is getting me thinking and has been for a while,high oil prices, does any other person think that the oil supply is getting a lot,lot lower than they are actually telling us
mark my words......................

 

There's plenty of oil around, just have a look at the Gulf of Mexico, there's a gazillion gallons of it and it's just floating around ready to be scouped up