Just been browsing and spotted the new Polo BlueGT comes with the 1.4 140PS ACT engine - a development of the Citigo/Up/Mii engine by the sounds of it with cylinder deactivation. 0-60 of 7.9s sounds almost quick enough; next years vRS, maybe, or a Sport version perhaps? Damned low CO2 of 107g as well, so thats on my watch list come new company car time..

VW ACT: http://www.volkswage...-technology-act for anyone who's not seen it.

Edited 7 March, 201313 yr by philhoward

Sounds like a great engine - a few magazines have reviewed it in the Polo and the new Golf. I think they said it has the same torque as the vRS engine?

Hope it will be in the new Fabia - next year?

I'm keeping an eye open....considering a 150PS 1.4 has been a twincharger up to now...

I hope that isn't the next vRS engine...less power than the current model just doesn't make sense.

I don't know Gumby.

There was talk a while back about a 1.6 tsi but nothing recently.

There are definitely more engines to come in the new generation but the Golf has only launched with a few so far.

The 1.4 ACT plugs a pretty big gap in the Polo range now between the 1.2tsi and twincharger 1.4.

It's just gone into the A1 too (interestingly named CoD - cylinder on demand). But I can't see Audi leaving it at the 1.4 ACT for the next A1 - they will need more power than 140ps - whatever the pressure for better emissions and economy.

Same torque as the twincharger unit...not found a torque/bhp graph yet to compare it to the 180PS (or even the 150/160/170/185) to see how "big" the torque curve is. Just found this on the VW site though:

The torque curve is interesting in that it exhibits a plateau-like shape: the maximum torque of 250 Nm is available at a low 1,500 rpm and remains constant at this level right up to 3,500 rpm.

Same torque as the twincharger unit...not found a torque/bhp graph yet to compare it to the 180PS (or even the 150/160/170/185) to see how "big" the torque curve is. Just found this on the VW site though:

Interesting that it has the same torque figure as the higher capacity 1.8TSi also! SHould be a great engine in terms of performance v's running costs/emissions but I cant see it being placed in the flagship performance variants.

I daresay it would be the perfect lump for a "Sport" variant...but the mid range grunt sounds like it would do for my needs come replacement time...

You never know - the twincharger gained 25PS from launch (160PS) to its current top spec (185), so maybe this is only the first incarnation. Maybe they'll go the BMW way and twin turbo it instead of supercharger/turbo?

Speculation, whichever way you look at it. At least there's not so much of a gap between the 1.2 105PS/1.4 122PS and the twinchargers now.

VW 'Cylinder Deactivation' (ACT)

& Audi 'Cylinder on Demand' (COD) could be brilliant.

http://www.whatcar.c...n-demand/265566

http://www.sae.org/mags/aei/10189

Thing is its all tested and tried on 12, 10, 8 cylinders shutting down,

this is 4 cylinders with 2 shutting down.

They have 4 cylinder Twinchargers with 1 cylinder shutting down and never firing again already.

4 years now of engine of the year and customers still having problems with the cars.

VAG like paying customers to be their Cash Paying Road Test Dummies.

I would be waiting a couple of years to see you they have got the technology and how they start treating customers with problems.

VW are no better than Skoda Dealerships for that.

george

Yep - had one of those "CoD" engines turning into a "Cylinder permanently deactivated"....don't think thats exactly the way it was intended!

What does make the VAG ACT/CoD tech different is that it seems to be the first 4 cylinder to do it.

It is all a variation on a theme.

Probably better than when we only have a choice of Dual Fuel ones with Electric Motors driving the wheels but powered from a small petrol engine.

That is where it is leading to.

http://www.en.wikipe...le_displacement

http://www.driveeo.com

george

What does make the VAG ACT/CoD tech different is that it seems to be the first 4 cylinder to do it.

Do I really want to be the first to try it though? Maybe not, given their inability to make a reliable 1400cc further up the performance spectrum! Cylinder deact are like superchargers to me... simply no where near as effective on things with just four cylinders as a start point.