Had my GTI a week and already looking to sell (MPG!!)

[Andy]

do you want to swap

[GrayMK5GTI]

I think in terms of a ratio of performance to economy the 2.0TFSI is pretty poor. Even when tiptoeing around barely touching the accelerator my car still returns poor MPG. I really hope the forthcoming engine in the new GTI is a dramatic improvement or the car no longer makes sense for me as a daily driver. I'm already tempted by the MK7 1.4 TSI.

I regularly get 40-43mpg if I stick the cruise control on at 70mph (on the speedo)   although it's a bit lower if the weather is cold.

These engines run very lean on light throttle (lambda 1 or summat - according R-Tech Nick). It's all about very light throttle inputs and maintaining speed. Loads of us on here have managed it  

Around town in stop start traffic, spooling the turbo means loads of fuel is dumped in and you end up with low 20's. Swings and roundabouts. . .

I used to get 40-41mpg out of my 2009 civic type-r doing the same and 36mpg out of my Focus ST. considering my car with the remap has more power than both of those I can comfortably say that performance to economy its actually VERY good for a hot hatch.  

Graeme

[alackofspeed]

These engines run very lean on light throttle (lambda 1 or summat - according R-Tech Nick).

They run stoiciometric at light to mid-loads and on spool my Revo mapped car dips to about 12:1 (lambda 0. before settling to about 12.5 under sustained load. You need to run at stoic' for a catalyst to work, and is fairly typical of a non lean burn petrol engine.

The naturally aspirated K20A2 engine in my other car without a cat' (to pollute / knacker) I've mapped to 13.2 at WOT and leaned it off 15.5:1 at mid-load and low revs / low cam to really drive the economy (no point burning it, if you're not going for it).

[andrewparker]

All I'm hearing is that you can get decent economy from it as long as you don't use the performance. That doesn't equal a good performance to economy ratio for me!

I do find it unusual though. 99% of my driving is in town, where I've just about managed to average 26 - 27MPG. That's driving like I'm scared to touch the throttle (always less than 2000rpm). I've filled up, reset the computer and immediately got on the motorway for an hour at 60mph, and not seen more than 33MPG.

In contrast, my wife's car (a BMW 320d M Sport Touring, 184bhp model) offers a far greater blend of performance and economy. Boot it around and you'll see 35MPG, or cruise at 80mph and you'll see 60MPG. It's pretty fun to drive too.

[GrayMK5GTI]

All I'm hearing is that you can get decent economy from it as long as you don't use the performance. That doesn't equal a good performance to economy ratio for me!

I do find it unusual though. 99% of my driving is in town, where I've just about managed to average 26 - 27MPG. That's driving like I'm scared to touch the throttle (always less than 2000rpm). I've filled up, reset the computer and immediately got on the motorway for an hour at 60mph, and not seen more than 33MPG.

In contrast, my wife's car (a BMW 320d M Sport Touring, 184bhp model) offers a far greater blend of performance and economy. Boot it around and you'll see 35MPG, or cruise at 80mph and you'll see 60MPG. It's pretty fun to drive too.

You can have great performance OR great MPG. unfortunately you will never get both together 

My mate has a 1.9 TDI golf mk4 with a hybrid turbo, big intercooler etc (235bhp). That does 50+mpg driven nicely, but will only do high30's /early 40's when driven hard.

Even diesel fuel economy suffers when using the performance 

BMW seem to have found a decent middle ground with the 2.0D 

[E30Dom]

You buy a diesel for economy... I'd sell up... Obviously not the car for you, strange choice if economy was you priority...

[richtung]

You buy a diesel for economy... I'd sell up... Obviously not the car for you, strange choice if economy was you priority...

I actaully got the ED30 FOR its economy!! I came from the MK4 4motion mind you..!

Rich

[RedRobin]

Even diesel fuel economy suffers when using the performance 

BMW seem to have found a decent middle ground with the 2.0D 

....BMW are famous for their engines and quite rightly have earned many awards for them. 

[AndyS]

I think economy also depends on what year the car is. I just had an engine change from AXX to BWA and the economy is not as good on the BWA engine.

Just did a BG44K service on mine, and the economy has got a little better 

[donovan2123]

I do 10miles every morning and average around 33mpg doing 60mph. I have seen 37-39mpg on longer motorway trips. My engine is bwa

[CMB]

You buy a diesel for economy... I'd sell up... Obviously not the car for you, strange choice if economy was you priority...

Economy obviously wasn't my priority I'm not dumb, but when others are telling me they get up to 40mpg on a motorway run and 20 odd around town and I get 32 and around 17 I feel pretty short changed..

[Shorty]

I saw 45 mpg once on a 30 mile trip, that was sitting at 55-60mph. Who needs diesel? 

[MC71]

^^^^ a car for all men (and women) 

 Love the way (when using the loud pedal and doddering about) it puts a smile on my face. For that alone it's not worth worrying about MPG. 

[andrewparker]

You buy a diesel for economy... I'd sell up... Obviously not the car for you, strange choice if economy was you priority...

Or a small petrol if you do mostly short distance urban journeys.

[stealthwolf]

I've only ever gotten 40 mpg on long runs (2-3 hour journeys) where I sit at 60mph with no overtaking. Otherwise it's 30-35mpg on those runs.

If it's around town, depending on what I'm doing, 18-24 mpg max.

I normally commute to work and have to fill the tank on a weekly basis. If I was after economy, I would have sold the ED30 and bought something else.