8 hours ago, plasma99 said:

Gerrycan, I have attemted to give a realistic figure.  You will notice my relatively low 32mph average speed for the tank.  The driving is mostly commuting on an A road followed by urban driving.  I'm sure I can get a fantastic figure driving down to the South of France in the summer but it will not mean anything.

 

I had a tough decision choosing between the 2.0TDi and the 1.4TSi.  I drove the petrol first and fell in love with it.  I thought it was so much more refined and and perfectly matched the DSG gearbox.  The only thing that got me was the awkward moment when I asked the salesman about mpg.  He stuttered a bit and said "forget about the book, you'll get 45mpg on a good run".  That didn't sound too good to me and I settled with the diesel despite the less favorable drive.  However, I would be interested to know was 1.4TSi drivers are getting.  If I could have been guarenteed 40mpg on a realistic run, I may have gone with it.  Less worry about the Government cracking down.

Your salesman undersold the 1.4tsi consumption in my opinion. Most  Briskoda 1.4tsi Superb owners report 50-55 mpg returns on normal UK speed type runs especially with its more advanced cylinder deactivation aspect (Octavia 1.4tsi does not have it) 

The balance usually swings in diesel's favour for high mileage users and especially when a run involves Continental speed limits/terrain.

DPF equipped diesel would be useless for us now with the high number of very short urban journeys we do. (my Fuelly returns are in my signature and only visible with a PC)

 

 

Last fill up was 847 miles driven, range left 45 miles.  Average 57.9 mpg

 

Almost a weeks commuting on the M5/M6 and a run to Winchester (which everyone knows is downhill from the Midlands) with three days commuting from office to a hotel near Sutton Scotney and then back home.  Effect of a long run is that on leaving the office to come home the range showing was 10 miles less than the distance to cover (plan to visit Tesco south of Bicester to fill up) but after hitting the A34 the range started rising faster than the distance fell - OK it was a fairly steady 65 but you ever tried travelling fast on the A34 late afternoon!) and filled up in Hawks Green near to home.

 

If I had driven down to Winchester at the speed I drove back range would have been well over 900 miles but I wanted a fry-up when I got there and didn't want to get up any earlier than I did.

 

The car is well run in having done about 22k.

 

 

I just posted on the diesel economy thread because I got some really good numbers yesterday morning. So I decided to check out the range as well (per maxidot). It shows a theoretical full tank range of 812 miles.

I thought I took a photo when I got home - sadly it seems I didn't but the full tank range had dropped to (from memory) 790 or so. Mpg is definitely improving over the past few weeks (61.8 yesterday morning, 57.1 yesterday evening). Long-term is 53 over 2,300 miles, and I'm expecting it to hit 55 or higher by the time it resets itself. Pretty good for a 190 I think.

Thought I’d add to this since my 280 seems to be getting better!  All since going for Sainsbury’s Super. 

 

Since my last fill up did 409.4 miles with 90 miles range left. That’s pretty good in my book for a car with this performance and I’m definitely not trying to be economical! 

Car said 33.2 mpg, my real calcs make it 32.8 mpg, so it’s reasonably accurate. 

 

Since the price is the same maybe try Tesco Momentum 99 (99 ron minimum) instead of the Sainsbury 97 ron (97 ron minimum).

1 hour ago, Offski said:

Since the price is the same maybe try Tesco Momentum 99 (99 ron minimum) instead of the Sainsbury 97 ron (97 ron minimum).

 

This is what I’m saying. I previously ran Tesco M99 since new for around 8000 miles but have recently found Sainsbury’s Super to be much better. I don’t know why but it definitely is by about 3-4 mpg on average. 

Amazing!.

Less octane more efficiency.  Or maybe Greenergy are supplying the Sainsbury you use as it is 97 ron Minimum, and they stopped distributing Winter Spec Petroleum at the end of March.

I have a 150 TDI - having just returned an hour ago from Birmingham, due to traffic it was a steady run there and back... below are the stats - 

 

For most of the 100 miles it was at 80mpg - mpg started to drop once hitting urban areas.

 

I have taken the car to Holland / Germany before and fully loaded can get 800 plus miles from a tank when cruising.

 

 

 

 

 

 

Edited 10 May, 20188 yr by RickTT

Well something has happened, be it a change from winter diesel, it's warmer now or a combination but the first few tanks were 5-600 miles, 600 including a trip to Newcastle and back (200m)

 

Currently on about 500 with about 250 range (did the same Newcastle trip again) no other differences.

Noticed a dramatic improvement in fuel economy on my Superb 190 DSG estate since last weekend - mixed driving on dual carriageways, and A roads, using Economy mode on the motorway (using the coasting feature when I see slow traffic ahead) - cruising at 75-80 , and using sport at roundabouts, junctions, coming onto slip roads, and any stretches of twisty A roads with no traffic in front - averaged around 55 mpg on this tank, a good 7 or 8 mpg better than previous weeks.

My Superb Mk3 150tdi DSG Estate is averaging (according to the infotainment) 51mpg (long term) and 58mpg (since refuel) its only done around 700miles total since new (its only 2 weeks old!)

 

I regularly see 64mpg on the computer during my 50mile/day commute (mainly motorway).  I'm sure as it loosens up it might improve more.  Even with my foot down a bit it usually stays above 40mpg on the motorway.

 

Town mooching is between 35-40mpg on short trips.

 

Overall I'm happy as the Long-term average (according to maxidot) on my Mk2 Superb was only 46MPG (after 3 years 1 month, and 45000 miles)

I’m extremely happy with my 150, moves very well when required 

 

Plus several insurance groups lower than the 190 

I've read on a few threads that diesels "loosen up" after about 10k and give better mpg, simple question, why?

Went down to the Languedoc last week and refueled at 1130kms (700 miles) with a range of 180kms (110) still showing. On one - all too brief - journey it actually met the manufacturers consumption figures - 4.1 litres per 100km - which is a first. Not sure why it performed so well then - in fact I have no idea why there is such variation (I do the same journey most days and consumption is anything from 5 to 6.5 litres with no apparent explanation).

I slightly improved my MPG on the last tank, probably because of the warmer weather.  Managed over 800 miles on a single tank.  The reported went up to 60mpg and the actual to 56mpg. 

 

Very happy with the economy of the Superb.  Don't know how they do it on a 1.5 tonne 2 litre car.  I remember figures of only 56mpg at 56mph being reported for cars such as the Peugeot 104 when I was a child in the early 80s.

Had my tracking done this morning after it was dragged sideways by a cowboy towing company (I'd paid for parking and was all legit etc - they paid), and drove 74 miles after filling up. Average speed was 37mph so just over two hours, hot day so air con on... and I got 85.9mpg with a projected range of 1040 miles when I stopped. I was being careful / killing time though. But, on the overall run (280 miles), I wanted to regain some time so got the hoof down a bit, and got back to my usual low 60s. Has to be said, I'm very impressed by the economy possible if you put your mind to it! 

On 14/05/2018 at 20:41, Baggins said:

I've read on a few threads that diesels "loosen up" after about 10k and give better mpg, simple question, why?

 

Not just diesels, all engines are tight when new and loosen up considerably over the first few thousand miles, and less noticeably over the first 15-20k.  It's not just engines either; gearboxes, diffs, transfer boxes, pumps and bearings all 'wear in' at different rates too.

 

When all the reciprocating and rotating bits have enjoyed a few tens of millions of cycles their mating faces are perfectly honed to match each other, reducing friction and allowing more power to get to the wheels, or the same amount of power with less load = better MPG.

 

I usually notice a big improvement by about 10,000 miles, but you can sometimes feel things continuing to improve until about 20,000 miles.

6 hours ago, juux said:

 

Not just diesels, all engines are tight when new and loosen up considerably over the first few thousand miles, and less noticeably over the first 15-20k.  It's not just engines either; gearboxes, diffs, transfer boxes, pumps and bearings all 'wear in' at different rates too.

 

When all the reciprocating and rotating bits have enjoyed a few tens of millions of cycles their mating faces are perfectly honed to match each other, reducing friction and allowing more power to get to the wheels, or the same amount of power with less load = better MPG.

 

I usually notice a big improvement by about 10,000 miles, but you can sometimes feel things continuing to improve until about 20,000 miles.

Very logical and clear explanation of why many claim big improvements for consumption and ability to rev.....however despite my having owned several brand new petrol and diesels, I have never experienced any consumption improvement that I could attribute to running in during ownership.

Believe me there were a couple of vehicles where I was desperate for it to happen, and I record my mileage with spreadsheets or more recently Fuelly.

Sometimes I feel like the only guy at the spiritualist's meeting who has never seen a ghost :( 

 

 

 

Edited 22 May, 20188 yr by Gerrycan

I never notice any consumption improvement either because I don’t change the way I drive* as the car gets older. They always go significantly better as they age though.

 

*let’s just say I don’t drive for economy

Some might notice the improvement in efficiency and lower fuel consumption just about when Fixed Servicing Oil & Filter changes were due.

Then better after when the Factory Filled Oil has been replaced.

 

Now there is a cunning stunt from VW Group, they need WLTP results and lower fuel consumption and lower emissions 

so now they have 'special oil', better oil, more expensive for customers to buy oil.  Or so they are going to tell you, just not the expensive bit.

So 

VW 508 & VW 509  0w 20 FS LL.  

 

Lets see how long until the Main Dealers increase Servicing Costs.  

3 hours ago, Gerrycan said:

Very logical and clear explanation of why many claim big improvements for consumption and ability to rev.....however despite my having owned several brand new petrol and diesels, I have never experienced any consumption improvement that I could attribute to running in during ownership.

Believe me there were a couple of vehicles where I was desperate for it to happen, and I record my mileage with spreadsheets or more recently Fuelly.

Sometimes I feel like the only guy at the spiritualist's meeting who has never seen a ghost :( 

 

 

 

My car has got 8,000 miles on it now and I have noticed improved mpg lately. Two runs on separate days saw me get 52 mpg.

Of course it's now summer which helps but I'm impressed.

My long term average is 39 so it will take a lot to shift the average, also those two runs were long so all my local journeys will bring it down again.

Billiard table flat terrain, no other vehicles on road, 20 deg C temp, no wind, cruise set to a constant GPS indicated 110kph (68mph) and the 'instant consumption' display on my 1.4tsi manual estate will show 5.7L/100 (49mpg).

Did that from new and unchanged at 45,000 km.

However same road, same tank of fuel and night-time temperature of around 5 deg C and I'll get 6L/100 shown.

I got a similar differential on my previous Mk2 1.9pd Octavia with 5.3L/100 and 5.7L/100 due to temperatures and that showed no variation in consumption over 90,000 km either.

In my experience a car's consumption doesn't just 'magically' improve. Any variations between results on individual trips can be attributed to driving style, driving environment and external factors. A longish run 250km I do fairly regularly recently went from my usual 52 to 55mpg average to over 60mpg because of a strong tailwind.

I realise I am outnumbered by those with stories of consumption improvements after running in their car. 

I do love seeing the obvious delight from those people posting good results for their vehicles.

Currently my first 3000km and an average of 58mpg (average speed 58 km/h). If it improves over time it will start producing Diesel  .

Or maybe just diesel oil in the engine oil reducing the viscosity and aiding economy.  As allegedly some manufacturers did while diesels were under EU test

conditions.

 

Now VW Group are going with Engine Oil with different viscosity....

VW 508 & VW 509.     Vorsprung Durch Technik.

 

Not referring to 'Testing' here,

but you might get the idea!  Diesel in Engine Oil.   Which some TDI owners have experience off or notice.

 

Edited 23 May, 20188 yr by Offski

Just working my way through the most recent tank of French gasoil and results so far

 

Total showing of 894.  Not all an eco run as the car was loaded and at 120kph on the autoroute with aircon on.

Three days commuting has had an effect and he total has dropped a little - was approaching 1000 miles although the M6/M5 wasn't too bad this morning (yes, 54 minutes to do 30 miles and almost 2/3 of it is motorway)

 

 

Long term includes a few long climbs in the alps and some shorter trips at 130kph

 

 

Not checked the fill to fill actuals yet.