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2.0 petrol automatic - poor mpg - browndog
Hi all

Just bought demonstrator model but seem to be only getting 25 mpg. can this be right? thought I should be getting around 40 with the new engine. Am I missing something or is it just my poor driving. previously had sline A6 tdi which worked out at nearer 40.
Browndog

Edited by Pugugly on 06/11/2009 at 21:43

a 6 se petrol automatic - Statistical outlier
Which engine? Quattro? Body style?
a 6 se petrol automatic - browndog
2.00litre not quattro se style no additions
a 6 se petrol automatic - Avant
It's quite a big car for a 2.0 engine, needing plenty of right foot to make good progress. You should get 30-ish with a manual gearbox, but 25 isn't bad for an automatic.
a 6 se petrol automatic - poor mpg - sandy56
I have a 2.5 l Ford Mondeo mk3 and I get 30mpg. It is a similar size/weight to the A6.
MPG will depend a lot on how and where you are driving. A big car with auto you may get 26-28 mpg if you are light footed and NOT driving in stop start city traffic.

I had an a4 with the 2.5 l engine and that was worse than the Ford for MPG.

ALso as an ex demonstrator it may not even be fully run in. It will take a few thousand miles for the engine to bed in, and mpg will improve, slightly.
a 6 se petrol automatic - poor mpg - cjehuk
A lot will depend on how hard you accelerate. How many RPM are showing when you accelerate - as it's a CVT it will tend to hold revs not rise and fall. If you're using more than about 2500rpm to accelerate you can expect fairly heavy consumption.

Around town 25mpg would be good, on a run I'd expect to get nearer high 30s to low 40s. Based on your TDI getting around 40 I'd guess you're mostly town based in which case you're not doing badly.
a 6 se petrol automatic - poor mpg - Happy Blue!
I am constantly amazed a the number of people who have unrealistic expectations of car economy.

I have driven a wide variety of petrol enginedd automatic cars over the last 13 years. I have rarely averaged anything better than 21 mpg simply because of my journey to the office and my typical working day. So, if I were to buy a modern 2.0 petrol auto in a large body I would hope for say 22 mpg but no better and if i bought a 4.0 litre or larger I would be delighted with 18mpg.

If wanted 40mpg from a petrol I would buy a Fiat 500.

But to expect 40mpg from a petrol when a previous diesel gave 35mpg is cloud cuckoo land.
a 6 se petrol automatic - poor mpg - rtj70
He says this a petrol auto and previously did about 40mpg in a diesel. Now there's your problem with comparisons in mpg. Petrol vs diesel for a start.

I'd never expect an A6 (which must weight at least 1700kg) with a 2.0 petrol auto to be fuel efficient.
a 6 se petrol automatic - poor mpg - s.v.u.
Although I am not running an Audi with regard economy of petrol engined automatic cars may I submit the following for your consideration. I have only ever owned one diesel engined car, a Mondeo 1.8 turbo estate, which was an M reg. I was not very impressed with the economy over all, towing a 21ft caravan around the highlands of Scotland it returned exactley 26mpg. Three years ago I did exactley the same trip, same caravan, but this time with my present car, a Mercedes 1.8 petrol engined Kompressor automatic estate. This car returned 29mpg. Around town it never gives less than 36mpg on a run usually 45-46mpg. This is driving at approx 70-75 mph over a 220 mile trip. The best I ever achieved, on a run, was when I drove for economy purely to see what was the best it would achieve, at a steady 56mph over the same 220mile trip it averaged 53mpg ! So as far as diesl engines are concerned, no thanks ! The car has a full service once a year with an oil change in between at six months. From what I read in this forum diesel engines seem to require more in the way of servicing than this, more often etc, also as diesel is usually more per litre than petrol I think overall I have made the right choice in my present vehicle, and of course there is the joy of the whisper quiet engine, so diesel?? Thanks but no thanks !!
a 6 se petrol automatic - poor mpg - dereckr
At the risk of thread drift, Svu?s observations and conclusions seem to rely on his experience of driving a Mondeo powered with that clunky old smoker, the Ford 1.8td. Ah well, there can?t be many caravan owners still towing with petrol.
2.0 petrol automatic - poor mpg - Manatee
It might help if you specified the model.

If it is a 2.0 TFSI 170 Multitronic, it has a nominal kerbweight of 1550Kg, and fuel consumption figures are 25.2 urban, 34.4 combined, 43.5 rural.

For that car, 25 sounds too low to me but if your journeys are short/urban, or your foot is heavy, it wouldn't surprise me at all. Ignore any suggestion that the car is underpowered, it obviously isn't.

I've no experience of TFSIs or multitronic, but they are supposed to have some advantage over non-turbo/non-direct injection engines and proper automatic transmissions, and I used to average between 26 and 30 from a CRV auto - heavier, and less aerodynamic, with a combined figure 4mpg lower. That said, a lot of people got nearer 22mpg from that model.

Audi claim "up to 15%" lower fuel consumption from TFSI; multitronic is more efficient than a TC.

I've been able to equal or better the combined figure in most cars I've used - but my daily commute is 17 miles each way, about 75% rural.

You do need to judge it by what you can get if you try though - you can't achieve the book figures the way most people drive. The performance figures and the economy figures are mutually exclusive, something the manufacturers never point out.

Edited by Manatee on 08/11/2009 at 09:32

2.0 petrol automatic - poor mpg - Rob_H
If it's any help, I've got a manual transmission Mk V Golf GTI with 25,000 miles which has a 2.0 TSI engine in it and this gets 23mpg in London commuting and around 30mpg at 70-80mph on the motorway. I get carried away with the whooshing noise and acceleration though, so a restrained person would probably get 5mpg more.

Bear in mind the computers aren't that accurate. I don't fill my Golf up much compared with my old Subaru Impreza which probably did about half the economy but reported the same on the computer. I can never be bothered to do the brimming / emptying mileage measuring cycles - I'd turn into my dad.

Cheers,

Rob

2.0 petrol automatic - poor mpg - John F
I've had a 98 A6 2.8 Tiptronic for over 6yrs, I drive it carefully between flat-out overtaking, it does between 28 and 31mpg. This summer it went to Versailles and back - brim to brim 34.5mpg over several hundred gentle miles - no faster than 85 on lovely French roads. It's smaller and lighter than your newer A6 and there is no extra weight and friction of 'quattro'.
The engine is a beautiful piece of engineering which was originally in the A8. It breathes very efficiently through five valves per cylinder and the top gear is ideal at 32mph/1000 revs - a gentle 2500 at 80. If light on the accelerator it will not change down till just below 40mph, so most of the time it's barely above idling speed.
Consequently the heater is lousy - takes ages to warm up on a cold day!
2.0 petrol automatic - poor mpg - Peter S
My A4 Cabriolet is fited with the 2.0T FSI engine, albeit with manual transmission. In normal (for me) use of fastish A and B roads it does around 31mpg. Driving specifcally for economy (ie no harsh acceleration and sticking to speed limts on dual carriagways/motorways ;-) ) - can see that rise to 38ish.

Note that the handbook for my car sas that it should be run on 99RON fuel to achieve maximum output; I asume not doing so has an impact on economy, but have never tried...

If your A6 has the same engine I wouldn't expect to get 40mpg in a month of Sundays!! 25mpg round town in a new car doesn't sound unreasonable; what's it like on longer journeys?

Peter
2.0 petrol automatic - poor mpg - cjehuk
My TT 2.0T FSI typically runs about 2-3mpg better on Shell V-Power than on bog standard Shell Unleaded, plus it idles smoother too.
2.0 petrol automatic - poor mpg - Roly93
I didnt think Auto transmission drivers worried about fuel consumption cus if they did they would go straight back to manual !
I'd say for the non-turbo A6 you should expect 30-32 at normal motorway speeds, and diabolical MPG if driving round town, due to the fact that most autos hold in low gears much longer than any manual driver would.
2.0 petrol automatic - poor mpg - lotusexige
Two things.

1. Different drivers will get different fuel consumptions in the same car, even at the same average speed.

2. If you are going to use a big heavy car you are going to use more fueal than to do the same thing with a small light car, asuuming that both cars are equally (in)efficient.
2.0 petrol automatic - poor mpg - George Porge
>>>>>>>Three years ago I did exactley the same trip, same caravan, but this time with my present car, a Mercedes 1.8 petrol engined Kompressor automatic estate. This car returned 29mpg. Around town it never gives less than 36mpg on a run usually 45-46mpg. This is driving at approx 70-75 mph over a 220 mile trip. The best I ever achieved, on a run, was when I drove for economy purely to see what was the best it would achieve, at a steady 56mph over the same 220mile trip it averaged 53mpg !<<<<<<<<<<<<<<<<<<<<


Merc 1.8 supercharged petrol auto estate..........................53 MPG

Panto seasons here ;o)
2.0 petrol automatic - poor mpg - Happy Blue!
I think the OP has gone walkabout. Two posts on the day he registers; asks advice and then we don't hear from him.

Troll - as always with this type of situation; especially when the question is so ludicrous.
2.0 petrol automatic - poor mpg - browndog
thanks to everybody who replied to my desperate message .out of country
for while now back and looking forward to giving my imput to other peoples problems /queries. Will change A6Se auto 2.00l asap. can't afford this mileage.