04-24-2015, 04:04 PM | #23 |
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ditto
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04-26-2015, 01:52 PM | #24 | |
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Absolutely! I was getting a bit frustrated being told ASS could be turned off I quite liked and accepted it on the previous car when it was possible to make a last minute decision if you wanted the engine left running as the car ahead was about to move off. I still wonder if it’s possible to alter the almost instantaneous switching off, as soon as the car stops, and reverting back to how it was pre LCI? ASS is not there for the benefit of the driver, but purely for the OEM who can claim a lower CO² rating and hopefully gain a competitive advantage against other brands (I have not seen anywhere that ASS is an EU requirement). At the same time, it helps generate both their and dealer profits by replacing worn out starters and other affected components (they actually stated in the past that ASS can reduce lifespan of starter motor). The car owner may save at most £15-20 a year in fuel costs (in intensive city driving) but it will cost around £700 for replacing the starter when it fails. In the ‘old days’ we knew it was not worth switching off the engine unless you were going to be stationary for around one minute or so as the extra surge of fuel at start-up negates the benefits; also, it takes about 5 miles driving to replace the battery charge, lost in starting the motor. So, extra strain on battery charge/recharge and necessity for brake regeneration incorporated in design (extra cost of feature paid by me) just to keep battery topped up as it uses power for unnecessarily starting the engine and also using daytime driving lights! Anyway, rant over. Overall, after two weeks, I am more than happy with the car and the incredible difference the variable sports steering has made to driveability and general road feel – I just love it. PS: Have people noticed the indicated fuel consumption with engine idling—99.9mpg goes a long way towards making up for keeping the engine running at traffic lights!
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04-26-2015, 02:19 PM | #25 |
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Drives: X3 20d Xline Melbourne Red
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My 2009 e90 with stop/start needed a new starter motor at about 19k
I have never used s/s in my X1 and that has done nearly 50k My commute has a 20 mile motorway stint which leads up an off ramp to a set of traffic lights .. I really don't think the benefit of s/s outweighs the effect of an engine suddenly stopping after a long high speed run
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04-27-2015, 12:32 AM | #26 | |
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One of the annoying things is that in the US, the ASS feature is coded to remember the last used setting, so you can decide if you want it enabled or disabled and it'll stay that way until you change it. In the UK, and I guess the rest of Europe too, it's always active when you start the car. I've coded it to remove this behaviour but it really shouldn't be necessary
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04-27-2015, 04:06 AM | #27 |
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'Indicated' mpg may be reading 99.9 (i.e. off), but if you venture into the trip computer you'll see your average mpg dropping all the time you're stationary - you are of course actually doing zero mpg.
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05-01-2015, 10:36 AM | #28 | |
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For me, it's the silence at junctions that I appreciate, and the feeling that I may be reducing the air pollution a bit in the area around me. When I test drove the X4 (Xdrive 2.0d Auto, delivery a week on Monday!) I noticed that the new 2.0d engine was smoother and quicker to act during ASS. I'll be leaving ASS enabled on my X4 too PS, are we using the acronym ASS with a hint of irony? |
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05-01-2015, 01:34 PM | #29 |
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Well spotted—I like it!
As you say, the new system is ever so smooth both on switch off and switch on; it's a big improvement on before, except for that one feature (for my use).
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05-01-2015, 04:29 PM | #30 |
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^^ THIS
Common sense prevails. Well done Kermit, Mate.
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