I've just seen according to the comic called AE, that Skoda are bringing the 1.5ltr TSi to the facelifted Octavia later in the year.

 

http://www.autoexpress.co.uk/skoda/98572/facelifted-skoda-octavia-to-get-new-15-litre-petrol-engine

 

Anyone had any experience of the 1.5 TSi engine in any of the other VW group marques/cars?

Edited 10 February, 20179 yr by TheWanderer

I don't think it's in any VAG cars yet. 

1.5 litres seems to be a poular size for engines now, I think it has something to do with car taxation in China

A quick google says it is due in the uk in a golf in March.

Just a development of the 1.4tsi ACT for stricter emission regulations.

reviews suggest it is a similar experience to the 1.4 so a Superb driver could probably confirm whether the ACT is a worthwhile addition or not.

Many of the downsized engines have not been a great success (fiat 2 cylinder, ford 3 cylinder, even the Mini 3 cylinder 1.5 (?)) but the VW 3 cylinder seems very good based on the so far small response on this site (from Finland).

Bound to happen, but guessing it'll be for the 2018 model year, which should land in the UK in early autumn. Always felt that my 1.4TSi could do with just a bit more muscle, though I assume the 1.5 will deliver better emissions/torque but similar speed.

Interesting that the AE article gives the output of the new engine as 148 BHP in the Golf (same as the 1.4, 150 TSI) - lower boost perhaps? so the only improvement appears to be the reduction in emissions, which is probably from the ACT.

Surely, fewer cylinders are for cost-cutting excercises rather than for gains in refinenement, performance or efficiency? Otherwise we would be seeing F1 1.6T engines with less than six cylinders.

Edited 11 February, 20179 yr by Orville

Apparently the new 1.5 engine delivers better real-world fuel economy than the previous 1.4 150PS ACT engine, and slightly better official figures. IIRC there are new tests coming that are more real-world than the old ones (which are total BS), and VW have said that downsizing has reached its limit. The 1.0 TSI is apparently pretty decent- the user-reported figures on the Honest John Real MPG site are better than for the 1.2 TSI in the Golf. I don't think there are masses of them out there though. 

 

VW were saying that the 1.0 3-cyl will stay, in turbo and non-turbo forms, but be aimed more at the Up triplets and the Fabia/Polo/Ibiza. Meanwhile the 1.5 will be the more common engine for the Golf/Octavia/Leon/A3 size cars, potentially with mild hybrids coming soon too. I'm intrigued- I'm hoping that it's like the Honda system and lets you use a manual gearbox though.

45 minutes ago, Orville said:

Surely, fewer cylinders are a cost-cutting excercises rather than for gains in refinenement, performance or efficiency? Otherwise we would be seeing F1 1.6T engines with less than six cylinders.

 

 

F1 use a V engine as it forms part of the cars frame. The 1.6 was originally going to be a straight 4 but it was too difficult and expensive at the time to package it into an F1 cars that had been designed for V8's.

1.4ACT I've driven and got a 6.x in Germany / Holland / Belgium last year. The 1.0 beats it hands down here with silly-good numbers. Like 4.7l/100km (nearly 60mpg over a test over 200+km from Lahti to Helsinki and back, including some traffic and ca. 80% 100km/h).  I liked that the 1.4 was cruising at 120km/h on two cylinders.

 

Apparently the problem is partly to do with the new testing cycle. It requires 130km/h, so the smallest engines are more strained and put out too much "bad stuff" (I'm assuming NOx or so) at that point in the cycle. So my assumption would be a larger base capacity with a similarly sized turbo is less strained and so easier to keep within spec. 

 

 - Bret

 

 

 

 

I think you are spot on with your analysis.

If I was driving an ACT version in this country then it is likely to be spending a relatively high percentage of its time on two cylinders, so the 3 cylinder sounds a better fit for my type of driving.

Still waiting for other 1.0tsi owners to confirm your exceptional figures. I believe you but you know that 'one swallow does not a summer make' thing.

On 10/02/2017 at 21:16, TheWanderer said:

I've just seen according to the comic called AE, that Skoda are bringing the 1.5ltr TSi to the facelifted Octavia later in the year.

 

What road tax bracket will it fit into? My 1.4 TSi is currently only £30 p.a.

On 11/02/2017 at 00:53, Gerrycan said:

A quick google says it is due in the uk in a golf in March.

Just a development of the 1.4tsi ACT for stricter emission regulations.

reviews suggest it is a similar experience to the 1.4 so a Superb driver could probably confirm whether the ACT is a worthwhile addition or not.

Many of the downsized engines have not been a great success (fiat 2 cylinder, ford 3 cylinder, even the Mini 3 cylinder 1.5 (?)) but the VW 3 cylinder seems very good based on the so far small response on this site (from Finland).

 

The significant feature of the 1.5 TSI Evo engine is the use of a variable geometry turbocharger ("VNT"). They are almost universally fitted to cars with diesel engines but technically very tricky on a petrol engine due the the high temperatures and lack of lubricating soot in the exhaust. IIRC the only other use on a volume produced petrol engine car has been on the 911 Turbo.

 

Theoretically the VNT should allow a larger turbo to be fitted, with an A/R that would normally cause some noticeable but with the VNT giving the normal low-end torque response that we expect from a low-pressure turbo engine.

 

I would say that the Ford Ecoboost 3-pot has been a great success, it is certainly a more advanced engine than the 3-pot in my Citigo, and the BMW 1.5 3-pot in the i8 seems to be highly praised.

 

Edited 12 February, 20179 yr by ronime

In the UK after April it will fit into pretty much the VED that other conventional low co2 g/km internal combustion engine cars under £40,000 list price will fit into, so £140 a year.

2 hours ago, ednmra said:

What road tax bracket will it fit into? My 1.4 TSi is currently only £30 p.a.

The Road Tax rules are changing from April 2017.

 

In the first year ONLY will the Road Tax be emissions related - on a sliding scale from £0 to £2,000 !!!

 

After that cars with emissions greater than 0g/km will pay £140 per year Road Tax unless they are "alternative fuel" (e.g. hybrid, LPG) when it will be £130 per year.

 

In addition, cars with values over £40,000 will pay an additional £310 in years 2 to 6 (regardless of emissions).

 

UK Road Tax from April 2017

 

Complicated or what???

Edited 12 February, 20179 yr by SWBoy

Auto express also have a review of the new Golf facelift with the new 1.5 tsi 150 (4 cylinder 148 bhp) - http://www.autoexpress.co.uk/volkswagen/golf/98500/new-volkswagen-golf-facelift-2017-review

 

I wonder if it has been fitted with a Gasoline Particulate Filter?

8 hours ago, Gerrycan said:

I think you are spot on with your analysis.

If I was driving an ACT version in this country then it is likely to be spending a relatively high percentage of its time on two cylinders, so the 3 cylinder sounds a better fit for my type of driving.

Still waiting for other 1.0tsi owners to confirm your exceptional figures. I believe you but you know that 'one swallow does not a summer make' thing.

Only 250 miles into ownership...but with car stuffed to gills, including my wife and two kids, managed to get 49.3mpg on a run from Norfolk to Ashbourne (124 miles) Average speed of around 40mph. Mixed roads and outside temp of 2C...1.0 SE estate...

7 hours ago, ronime said:

I would say that the Ford Ecoboost 3-pot has been a great success, it is certainly a more advanced engine than the 3-pot in my Citigo, and the BMW 1.5 3-pot in the i8 seems to be highly praised.

 

that one requires a service every year, very specific oil and it's awful around town. Gearing does *not* help economy - 4th is too long for 50km/h so you're in third at 2k rpm instead. 2nd is good all the way past 80 km/h - this is a city car! The difference between the two couldn't be greater - well, Ok, economy wise it's not quite 3l/100km difference *to the advantage of the Octavia*. The Fi does have a pleasant turn of speed, but the VW unit is even better. Would *really* like to drive an Up with one of these in, it would be a rocket.

 

 - Bret

11 hours ago, ronime said:

 

The significant feature of the 1.5 TSI Evo engine is the use of a variable geometry turbocharger ("VNT"). They are almost universally fitted to cars with diesel engines but technically very tricky on a petrol engine due the the high temperatures and lack of lubricating soot in the exhaust. IIRC the only other use on a volume produced petrol engine car has been on the 911 Turbo.

 

Theoretically the VNT should allow a larger turbo to be fitted, with an A/R that would normally cause some noticeable but with the VNT giving the normal low-end torque response that we expect from a low-pressure turbo engine.

 

I would say that the Ford Ecoboost 3-pot has been a great success, it is certainly a more advanced engine than the 3-pot in my Citigo, and the BMW 1.5 3-pot in the i8 seems to be highly praised.

 

 

Good background info on the 1.5tsi but it seems an awful lot of complication (ACT, variable geometry turbo) in a 'cheap' engine.

Hopefully it will be better sorted than the twincharger.

 

I drove a Focus 3 pot in the UK for a while, the drive was good but I was disappointed with economy returns, a fact I mentioned in this forum and several others said they had experienced similar.

 

The others engines were from local owners comments and also reports from EUMA said they had the worst comparative 'real world' economy.

 

 

 

Edited 13 February, 20179 yr by Gerrycan

4 hours ago, rothair said:

Only 250 miles into ownership...but with car stuffed to gills, including my wife and two kids, managed to get 49.3mpg on a run from Norfolk to Ashbourne (124 miles) Average speed of around 40mph. Mixed roads and outside temp of 2C...1.0 SE estate...

 

From the average peed it seems you caught a bit of traffic so your returns can probably be rated very good for the conditions, not as good as reports from Brettikivi but I think they have far lower traffic density in Finland which makes a lot of difference. 

 

Coming from a non-DPF diesel it took me a while to get the hang of driving petrol to get the best returns. My 1.4tsi offers next to no in-gear engine braking effect which totally threw me, but when used wisely can make a useful contribution. I imagine the 1.0tsi offers even less engine braking effect?

VW have just announced that the new Golf update to be released in Australia will not include the new 1.5tsi because of costs and lax Australian emission regulations.

The 110kw 1.4tsi will be the base engine, no mention whether it is the ACT version though. Currently that engine only appears here in an Audi.

On 2/13/2017 at 01:07, Gerrycan said:

 

 

Coming from a non-DPF diesel it took me a while to get the hang of driving petrol to get the best returns. My 1.4tsi offers next to no in-gear engine braking effect which totally threw me, but when used wisely can make a useful contribution. I imagine the 1.0tsi offers even less engine braking effect?

 

I had the opposite experience yesterday having been used to my 1.4 tsi for 22 months - was given a 16 plate Octavia 1.6 diesel estate as a courtesy car -  When I set off from a roundabout the diesel showed some initial promise with an initial surge of power but after this it suddely felt flat. I suppose it's just adapting your driving style to match engine/gearbox characteristics.  

 

I got used to the diesel again after a while but when I swapped back I appreciated the silence of the petrol - think my next car will be petrol (possibly hybrid) although I'm not totally convinced by the variable vane turbo 1.5 - I worry this may have relaibility issues due to the higher petrol combustion/exhaust temperatures. I'd also put money on this engine being one of the first to get a GPF. I'll sit on the fence for a while and let others "trial" these technologies 

 

 

 

1 hour ago, bigjohn said:

 

I had the opposite experience yesterday having been used to my 1.4 tsi for 22 months - was given a 16 plate Octavia 1.6 diesel estate as a courtesy car -  When I set off from a roundabout the diesel showed some initial promise with an initial surge of power but after this it suddely felt flat. I suppose it's just adapting your driving style to match engine/gearbox characteristics.  

 

I got used to the diesel again after a while but when I swapped back I appreciated the silence of the petrol - think my next car will be petrol (possibly hybrid) although I'm not totally convinced by the variable vane turbo 1.5 - I worry this may have relaibility issues due to the higher petrol combustion/exhaust temperatures. I'd also put money on this engine being one of the first to get a GPF. I'll sit on the fence for a while and let others "trial" these technologies 

 

 

 

I admire the new tech that VW are prepared to introduce but it can backfire when testing seems to be incomplete, but since the variable vane has already been used in the higher performance Porsche then this relatively tame application should be ok. We will see.

 

I don't think I would go back to diesel either, much as enjoyed my time with it.