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Can't get near it with the current weather conditions but I've done 700 on a tank: DATE 04/08/2014 MILES 711.00 LITRES 62.509 MPG 51.71

You do need to drive one to get to grips with the drivetrain. The whole rpm thing is quite different to any 'conventional' setup due to it not having any fixed gear ratios. If you poke the throttle firmly, the revs will spin up to basically maximum and stay there until you ease off. A lot of people (seemingly) can't get on with this behaviour.

As stated by others the engine revs are more related to load than speed. It's possible to travel significant distance at only about 1200 rpm if the terrain is flat. In the summer, taking it steady but still at around 70mph, I saw 60mpg from Manchester to Portsmouth. Realistically, that's about 56 as the computer is a bit optimistic. More than any other car I've owned, it's very sensitive to how you use your right foot. Very good numbers are achievable, but will plummet once you start pushing. My work commute (30miles m/way, 15 mixed A-road) can vary by at least 20mpg depending on circumstance/mood/weather. Over 10k, I've averaged 50.

Damn, when you posted the other day (powercut thread) I very nearly said to check your battery terminals, but then I got diverted onto something else.

It's already in the pipeline http://en.wikipedia.org/wiki/Electric_vehicle_warning_sounds I've had a couple of near-misses with people walking into my path - makes 'em jump when they realise. What might be more useful is a proximity warning app to wake up all those muppets who wander all over the place while obliviously fixated on their twitter-feed or whatever it is that's so interesting on their smartphones.

You need to drive them both and consider what you need from a car as, aside from both being hybrid drivetrain, they're not alike at all.. For me, the IS is in a different league.

I did get over 700 miles a few tanks ago. I didn't really intend to stretch it that far but I was running late already and didn't have time to go via the petrol station. I did 30 something miles on zero range, and it took 62 litres to fill. I'm usually getting mid to high 600s to the tank.

The reason you get more power in cold weather is because the fuel/air mixture is denser, you still have to put more fuel into that mixture. When the tyres throw up spray, that's energy being wasted moving the water. Whatever the reasons, every car on which I've bothered to measure the fuel consumption gets worse mileage in the winter.

Samsung Galaxy S4. Not looked what the s/w version is on the car, but it sounds like Colin has answered the question anyway.

Definitely better mpg during warmer weather for a number of reasons. Engine takes longer to reach operating temperature and you're likely to run the heater, lights and wipers more in winter which will result in more load/engine running. Cold air is more dense and will need more fuel to maintain the correct mixture. There's other factors like in winter it's more likely to be wet which will increase rolling resistance. All these little things add up.

Yes, I get the option when I receive a text. There's 3 screens of pre-programmed replies to choose from (you can edit them)

Very few saloons have a rear wiper. It's not easy to package a wiper mechanism in the available space. Plus, they always look really ugly. Use a repellant like RainX which will really help the water to bead and run off.

I hate the parking brake, but the IS has Hill Start Assist so I don't think you would ever need to use it except when actually parked - I haven't needed it yet.

There's several options, including "average after refuel" which is the one I've got set.

You select what appears on the Multi Information Display with the Settings option. You need to be stopped to change these. Press left or right on the joypad on the wheel until you see Settings on the MID. Then use Up, Down and Set to change the Drive Info 1 & 2 settings to your preferred options. Drive Info 1 has the option for current MPG I think. You might have to play around a bit (or look in the book if desperate!) - there's quite a few options and it's not easy to explain in a few words. Welcome to the club :)

I find the brakes a bit unpredictable and hard to modulate as a result. I've not done enough miles in it yet to really understand the whys and wherefores but it is something I noticed early on. It seems to be most noticeable during intermediate braking i.e. harder than a normal slow to a stop, but not a 'jump on the pedal' moment. By comparison, in my Honda (IMA hybrid) the transition between regen & mechanical was pretty much undetectable.

Yes, the reset button is almost in the driver's footwell! If you feel the underside of the front edge of the lower part of the dash, right in the middle, you'll find a recessed button. With the car "ready", press and hold the button until the TPMS warning light flashes 3 times, then release. Wait a minute or so, then switch the car off. It seems a very odd place to put it, quite difficult to find until you know where it is. If you have PCS, I think there's another button down there to turn that off, so you'd need to check which is which. If your dealer is averagely useless, they will just keep resetting the TPMS instead of checking that there is actually enough air in all the tyres - that's how mine was handed over :eerrrmm:

1st full tank: 673 miles from just under 60 litres, works out at 51.7mpg. The computer reckoned 55mpg. Range was down to 5 miles at fill-up, and the light came on at about 40.

I think that's the case for the Nav SD slot, but just get a micro-SD to USB adapter and use one of the 2 USB ports - that's what I use.

Thanks Colin & Chris. Two names I remember from the dim & distant past! It sure feels like a long time anyhow. Cheers David. Sort of - fortunately, my actual fuel cost is met by my employer, but they expect most folks to run about in small-to-medium diesels. I feel a certain smugness from kicking that trend, and not worrying about particulate filters & dual-mass flywheels and any other associated diesel weakpoints. Not to mention the smooth & quiet drive. Other than that, I've always tended to choose something a bit 'different' and generally like the Lexus ethos. The Honda was pretty good, certainly in terms of running costs. Maintainance was peanuts and it averaged 52mpg over the 70k I did in it, but I wanted to go back to an automatic, preferably with a bit more oomph and practicality. The IS seemed to fit the bill, so here I am!

Greeting fellow Lexus fans! I've been dallying with other brands for about 7 or 8 years, but I've come back to the fold now with a 9 month old IS300h Luxury in Celestial Black with Premium Nav. I previously had two 1st-gen ISs - a 200SE manual, followed by a 300. The first surprise is that my username was still active on here after all this time! Anyway, really enjoying the new driving experience. I've just come from a Honda CR-Z Hybrid so not entirely new to battery power, but the HSD system is much more sophisticated and versatile. The behaviour of the throttle and brakes take a bit of getting used to, but otherwise all good. I've done about 800 miles in a week and a half or so, mostly motorway, and my average is 55mpg so far (on the computer anyway) which is pretty astounding for, what is after all, a fairly big and heavy car with decent performance. Still finding my way around the settings and functions of the Nav, but getting there. A couple of pics;

That's by Steven Wright (American stand-up). As is no 16 I think.

Leeds told me at MOT time that my fronts were 80% worn and would need doing "soon". 3000 miles later (at 60k) they were curiously OK again, and are still going strong now at 68k. I bought a set of pads after the MOT and am still waiting for them to actually be needed - then I will fit them myself. BTW my first set of front disks and pads lasted 40k.

Not an LS, but my IS radio does it if I have Traffic enabled - hugely irritating. My previous IS did it too, although I don't remember it being quite as bad.

corect! I thought it was a bloke but there we go? Ha Ha - like I said, I forget the details I think there were a couple of simliar stories around, one eating a kitkat, the other having a drink (water, not ale )