As a Revo article I read recently explained most drivers use part throttle for most of their journeys and a modern petrol engine like the 1.5 TSi feels just as lively accelerating from say 60 to 70mph even in 6th gear on the motorway overtaking a truck in the inside lane.

43 minutes ago, EnterName said:

Hi Shy!

I was just responding to @musaka's original post about the 1.5 TSI feeling a lot slower than the 2.0 TDI, and showing why it is.

There's a whole host of different factors that go into choosing your engine, and if you're happy with the engine in your car, then you made the right choice.

But an informed choice is the best choice, unless you're really lucky.

(I was just about to do comparison graphs for other Octavia engines for my own amusement.)

Here's a closer alternative for the 2.0 TDI 150PS (red), the 190PS TSI (blue).

Where the 190PS TSI seems like it's going to be way faster than the 150 TDI, for general tatting about, they are actually quite similar in power characteristics, until you get up into the revs where the petrol TSI can do its thing.

There are going to be a load of other factors, such as the pick-up of revs in response to the throttle, the gearing and probably a shed load of other things I'm too lazy to cover and likely don't have the expertise to know about, but purely comparing power at given RPM, in the lower rev range, the TDI has the edge at any given RPM for these two engines.

 

3 minutes ago, shyVRS245 said:

As a Revo article I read recently explained most drivers use part throttle for most of their journeys and a modern petrol engine like the 1.5 TSi feels just as lively accelerating from say 60 to 70mph even in 6th gear on the motorway overtaking a truck in the inside lane.

I'd have to have a play with the various cars to have an opinion, TBH.

The only Octavias I drove were the 184 TDI, the 150 TDI and my 190 TSI.

(Oh, and a MK2 vRS TDI, whatever power that was. Very nice it was too!)

I've not driven the 150 TSI. (I'm actually quite curious about the 115 TSI, it's supposed to be a very nice engine.)

Playing Devil's Advocate if you remapped both the 2.0TDI and the 1.5Tsi they would end up around the same power as the 190PS 2.0 litre petrol yet still be more economical than the 2.0 litre turbo petrol engine (cake and eat it).

1 minute ago, shyVRS245 said:

Playing Devil's Advocate if you remapped both the 2.0TDI and the 1.5Tsi they would end up around the same power as the 190PS 2.0 litre petrol yet still be more economical than the 2.0 litre turbo petrol engine (cake and eat it).

Yeah, shut up!

14 hours ago, shyVRS245 said:

But a 2.0 litre engine is always going to out perform a 1.5 litre engine (petrol or diesel). My 2.0 litre Superb only produced 369nm at a high 4,500rpm until the remap sorted that out with 480nm at 2,400rpm and a maximum of 514nm now at 2,800rpm now compare that to the 340nm 2.0 litre diesel. Also the diesel takes longer to get to 60mph compared to the 1.5 litre petrol as it runs out of usable revs compared to a petrol. The gap would be even greater were they to keep accelerating upto 100mph. Driving the wife's Karoq 1.5 litre manual petrol tonight it averaged 54mpg on my 27 mile commute and petrol is cheaper to buy than diesel in the UK at least.

Do you by chance have before and after power curves for your remap, @shyVRS245?

 

Incidentally, I do wish power curves were standard features in the information provided by manufacturers, like the "good old days".

The motoring media were much more into telling people about the technical aspects of cars, too.