Based on the latter part of this thread;

http://www.briskoda.net/forums/new-octavia/pleasant-surprise-mpg/71782/

I'm intrested to know what sort of mpg drivers of TDI VRS's are getting compared to TFSI's based on the following;

Motorway driving at an indicated steady 70-80mph and

General overall observations on fuel consumption and the two engines in general

Cheers

Edit: One more question, would a remaped (stage 1) TFSI see an increase in mpg when driven 'normally' like a TDI does?

If you drive a TFSi in a reasonable manner than you can expect to see mid 30's. I've had some really quite good returns on longer journey's.

I'm on my second car now and I don't regret having another petrol engined one.

Seem to get mid to high 40's cruising around 70 with my vRS TDi, but still less than 5K miles so should improve.

I get low 30 to mid 30s on motorway driving. Usually 28-29 on normal driving.

Wish I'd gone diesel really given that I've done 3000 miles in the 4 weeks I've had it!

Low to mid 30s on motorway driving and anything between 20 and 30 on short journeys depending on how I drive!

30 - 35 shortish journeys, 35-39 on long journeys. not bad for petro VRS!

30 - 35 shortish journeys, 35-39 on long journeys. not bad for petro VRSl!!

That's about what I saw on my last one, new one is still low miles so not as good yet.

I have a vRS Tdi just done 2500 miles from new , At the minute i am getting mid 30s round the doors but on a good run with the cruise control on (70mph) i can get 48-ish , however i managed 51.2 mpg for a while on the M6 few weeks back on a run over to Blackpool

Thanks for the feedback so far guys

I think mid 40's for a TDI is low on a reasonable run....

The fact £13k ish (Looking at £15-16k for a TDI) can get you a 12 month old TFSI (delivering mid-high 30's on a decent run) combined with up to 5p a litre more for diesel has got me thinking that a TFSI might be a better option :rubchin:

Where's Welshy to do the maths when you need him?

I have seen 42mpg out of mine on a motorway journey - I was driving very economically as you can imagine.

When on one of my routine thrashing sessions I usually average 15mpg.

Around town, with normal driving I get on average 28mpg

I don't think it's too bad. Fuel economy doesn't concern me, it's something you take into consideration when debating the whole petrol/diesel thing.

Of course the diesel is going to be more economical most of the time, but the benefits you get from the TFSI in terms of driving enjoyment far outweigh the economy of the diesel.

Thanks for the feedback so far guys

I think mid 40's for a TDI is low on a reasonable run....

The fact £13k ish (Looking at £15-16k for a TDI) can get you a 12 month old TFSI (delivering mid-high 30's on a decent run) combined with up to 5p a litre more for diesel has got me thinking that a TFSI might be a better option :rubchin:

Where's Welshy to do the maths when you need him?

Yes the TDi will cost more for the same spec car and yes DERV is 4-5p cheaper. Most folks seem to do a straight calculation and say that for an extra £1500 (for instance) you will need to do an extra so many miles to get your pennies back BUT what most folk seem to forget is that come trade in time you will get a proportion of the extra cost of the DERV car back - this reduces greatly the number of extra miles need to justify a DERV motor.

every 1000 mls a petrol motor, doing say 33 mpg would use 30 gals of fuel = 136lts at say 100p/ltr = £136

every 1000mls a DERV motor doing 45 mpg uses 22.2 gals = 100lts at 105p = £105

if you save £31 per 1000mls you will recoup the cost of the extra £1500 spent in a total mileage driven of approx 50,000.

BUT if you recoup half of the extra £1500 outlay when you resell the car (which is a more that reasonable assumption since retained value percentages are normally at least as good for DERVS as opposed to petrols) then you extra outlay is only £750 plus a little interest on the additional cost, so lets say £850 - you are now getting your money back in under 30,000 mls

Yes the TDi will cost more for the same spec car and yes DERV is 4-5p cheaper. Most folks seem to do a straight calculation and say that for an extra £1500 (for instance) you will need to do an extra so many miles to get your pennies back BUT what most folk seem to forget is that come trade in time you will get a proportion of the extra cost of the DERV car back - this reduces greatly the number of extra miles need to justify a DERV motor.

every 1000 mls a petrol motor, doing say 33 mpg would use 30 gals of fuel = 136lts at say 100p/ltr = £136

every 1000mls a DERV motor doing 45 mpg uses 22.2 gals = 100lts at 105p = £105

if you save £31 per 1000mls you will recoup the cost of the extra £1500 spent in a total mileage driven of approx 50,000.

BUT if you recoup half of the extra £1500 outlay when you resell the car (which is a more that reasonable assumption since retained value percentages are normally at least as good for DERVS as opposed to petrols) then you extra outlay is only £750 plus a little interest on the additional cost, so lets say £850 - you are now getting your money back in under 30,000 mls

Thanks that's an intresting way at looking at it...... supose it could be a tad less when you consider the lower insurance group and road tax of the TDI as well...

However £30 per thousand miles for the extra the TFSI would bring (not that I don't like the way TDI's perform) seems a reasonable price to pay (I think :confused:)

Thanks that's an intresting way at looking at it...... supose it could be a tad less when you consider the lower insurance group and road tax of the TDI as well...

However £30 per thousand miles for the extra the TFSI would bring (not that I don't like the way TDI's perform) seems a reasonable price to pay (I think :confused:)

I ain't gonna attempt to put a price on enjoyment!!!!!

Why would you want a petrol car when you could have all that lovely diesel torque to play with?!?!

Why would you want a petrol car when you could have all that lovely diesel torque to play with?!?!

Why would you want a dirty diesel when you could have just as much torque, if not more, with a TFSI?

How does 322lbft sound

:iagree:

£30 extra per 1000 miles sounds worth while to me... especially when you count the fact it wont sound like a tractor :P

I hope that as a current Subaru Wrx owner i may contribute to this thread,

Reading a post such as this is one of the reasons I would like a Vrs be it either TDI or TFSI

I think considering the performance of the car these figures are incredible,

One of the things i dislike about the WRX is no matter how you drive one it still drinks fuel

Last week I was out late night on a main road with little traffic on a 76 mile trip and doing 60 to 70 Mph the whole time I still only averaged 21/ 22 Mpg.

Drive it like it should be are you in 18 to 20 mpg territory and mine isnt alone as most seem like that as I had one many years ago and it was the same,

One thing interests me though is that if the VRS TFSI is the same engine as a Golf GTI are the mpg figures the same for a golf in driven in a similiar fashion.

I'd imagine the equivalent Golf would have very similar MPG figures.

Insurance groups seem to be 2 or 3 different i.e. TDI Gp 14 TFSI Gp 16 or 17 - with a resulting effect in premium.

Also are we talking Private or Company car? If its a Company Car the lower CO2 of the TDI means less Company Car Tax by about £850 per annum.

At the end of the day though; drive BOTH see which you prefer and buy that one!

PS> for what it is worth to answer the original question; about 10mpg driven like for like.

Bit concearned now. My TDI has 12k on it and I do at least 190 miles every day on a mix of A roads, Motorway and a bit of town stuff. Sit approx 75 on motorway, and have a bit of fun on the 28 miles of A road - I cannot get more than 41/42 out of her. Even on a frequent hack down to Birmingham from Dundee no more than 43 at 75 with cruise on. However the main difference I feel between tdi and TFSI is like drive the TDI like its on fire and I still cannot get it to drop below 38MPG.

Bit concearned now. My TDI has 12k on it and I do at least 190 miles every day on a mix of A roads, Motorway and a bit of town stuff. Sit approx 75 on motorway, and have a bit of fun on the 28 miles of A road - I cannot get more than 41/42 out of her. Even on a frequent hack down to Birmingham from Dundee no more than 43 at 75 with cruise on. However the main difference I feel between tdi and TFSI is like drive the TDI like its on fire and I still cannot get it to drop below 38MPG.

fuel consumption is all relative to the type of driving you do and will vary greatly from one to another.

I have recently changed jobs and so am doing a different daily commute.

In a 1.9 tdi I travel 58 miles, average about 47 mph and do 48-49mpg

previously traveled 26mls at and average of 36mph and did 53 mpg

As i have said in a couple of other posts I've been driving a Golf GT TDi 140 a fair bit recently (SWMBO's temporary Company Car) It's a lovely car to drive and handles really well, better than a standard Octy II vRS IMHO but it does seem to drink fuel considering it's an oil burner. Rarely above 42mpg even on a 300+ mile run.

Bit concearned now. My TDI has 12k on it and I do at least 190 miles every day on a mix of A roads, Motorway and a bit of town stuff. Sit approx 75 on motorway, and have a bit of fun on the 28 miles of A road - I cannot get more than 41/42 out of her. Even on a frequent hack down to Birmingham from Dundee no more than 43 at 75 with cruise on. However the main difference I feel between tdi and TFSI is like drive the TDI like its on fire and I still cannot get it to drop below 38MPG.

Don't worry Scottie, that's in reality about the mpg (41-42) I'm getting from my TDI vRS. The only time I can (possibly) get an improvement is when cruising on the M'way in thick traffic at 55-65mph when it will edge toward 45mpg.

I do like to use the loud pedal liberally but conversely anticipate traffic situations and back-off early (rather than late brake) so on balance am driving in quite an economical manner.

However, as you say, even on a blast it is difficult to get less than 37-38mpg - fantastic for such performance.

30 - 35 shortish journeys, 35-39 on long journeys. not bad for petro VRSl!!

Pretty much exactly the same for me.

Insurance was much lower than I expected for the TFSI. It's grp15 (GTI Golf is 17) I think the derv is 13.

I was expecting about £500 but I was actually getting quotes for anything down to £250. In the end I'm paying about £330 to go with a better company and I've taken all the extras (I think it did help turning 30 a little before I bought, I've 5yr NCD).

Don't worry Scottie, that's in reality about the mpg (41-42) I'm getting from my TDI vRS. The only time I can (possibly) get an improvement is when cruising on the M'way in thick traffic at 55-65mph when it will edge toward 45mpg.

I do like to use the loud pedal liberally but conversely anticipate traffic situations and back-off early (rather than late brake) so on balance am driving in quite an economical manner.

However, as you say, even on a blast it is difficult to get less than 37-38mpg - fantastic for such performance.

Ta for that - you can understand the worry of a scotsman over such matters!