MK7 GTD - Real Life MPG

[2014GTi]

Correct, the dealers should have asked you to see if a Diesel was the best option 
And yes, its a costly thing to repair 

[noobmonkey]

hehe, its only because i'm office based in the past few and coming few weeks, will be out and about much much more in the new year (I cover an area from new forest to dover and up to london, so i should get enough long trips soon enough )

- And was via a work lease, so they pretty much ask nothing - other then do you have a pulse and can you pay...

Anyway... tis all about the smile, screw the regens

[Sootchucker]

Fair enough then 

[Misterp]

Tbh I wasn't asked and I get a regen every two/three weeks.

[Gordor]

320 miles today....up and down the M4..M5...M42 and A34 with some "I'm bored" moments if you know what I mean  48.1 I'll take that!

[KyleB]

I had an experiment today. My normal working commute I can get 52mpg with crushing at 70/75. Today I took it down to 60 and achieved 58.9mpg with a fair bit of stop start traffic.

Seems to me to crack the big numbers it needs to be done at 60mph.

[noobmonkey]

silly assumption, but assuming cruise control? or just normal drive in 6th?

[monkeyhanger]

Tbh I wasn't asked and I get a regen every two/three weeks.

I seem to get one every week/250 miles and I would say that about 1/3 of those are active where the stop/start stops working and the idling is at about 1000rpm. Had one coming in this morning and the car did 43mpg, with the fan blaring and the hot/burnt smell coming from the exhaust when I parked the car up.

Never had a single active regen in the whole time I had my Scirocco. Doing a 75 mile round trip tomorrow - will be interested to see what my GTD does.

[Misterp]

Tbh I wasn't asked and I get a regen every two/three weeks.

I seem to get one every week/250 miles and I would say that about 1/3 of those are active where the stop/start stops working and the idling is at about 1000rpm. Had one coming in this morning and the car did 43mpg, with the fan blaring and the hot/burnt smell coming from the exhaust when I parked the car up.

Never had a single active regen in the whole time I had my Scirocco. Doing a 75 mile round trip tomorrow - will be interested to see what my GTD does.

MH mate I get one every 250 miles too and it bloody stinks when you park up.  car is with VW today for the economy test. they initially suggested that they will do a brim to brim test to see how 'economical' the car is. I told them that I am not paying for a full tank of texaco fuel (closest petrol station to the dealership) and not get to use the fuel. your test you pay. I am awaiting a call as to what they intend to do as the guy in the servicing dept seemed to suggest that I  wold have the car back tonight and one of the other guys suggested that they would keep it for 3-5 days.

[monkeyhanger]

So they were proposing to fill up at your expense and run the car for a good few days and then determine how much it used by filling again (at your expense) – sounds like a great deal…..for them.

They should be able to act off the MFD indicated mpg and assume it is 3 – 5% optimistic. At that point they should be able to decide whether your mpg is reasonable or not. Presumably they can look at the engine oil temp profile over a period of time (hoping the MFD logs that since last fill at least etc).

I do think the key to reasonable mpg is a clean DPF and getting up to normal running temp as quickly as possible. I don’t think the MK7’s DPF clearing regime is conducive to decent mpg on mine.

My car’s engine oil takes almost twice as long to get to temp as the Scirocco’s did. The oil temp is about 40C behind the water temp on the warm up cycle, whereas on the Scirocco the oil was about 20C behind the water and it easily held 94-95C for the rest of the journey. Mine seems to be maintaining a temp of 90C unless it is in a medium/high load situation where it will creep up (but also seems quick to drop back off to 90C when it isn’t under much load).

For those with better mpg, are you seeing fewer regens? Does your resting warm oil temp generally exceed 90C when not under significant load (not significant meaning maintaining a speed of 50mph or less). What about those with poor mpg/high frequency of regens – seeing the same engine temp profile as me.

If my car’s management system is keeping it atypically cold then I think there might be something in it.