Small capacity turbo-charged petrol engines.
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From: Ret. on 15 Jun 2010 14:40 They seem to be all the rage at the moment and are suggested as an economical alternative to a diesel. Certainly they seem to pull out all the stops: good performance and excellent mpg - but what are they like to drive? My diesel auto 75 is very relaxed on the motorways. At an indicated 80 it is only doing around 2500 rpm. My son's old Passat petrol auto always sounded very stressed and noisy at that sort of speed - revving very much higher. I would prefer a relaxed diesel to a very high revving petrol engine - but does the turbo-charger mean the revs are lower at high speed? VW group 1.4 turbo petrol engined cars with the DSG gearbox (which gives better acceleration and economy than the manual version) are attracting my interest. It would be nice to have the benefits of an auto box without the fuel penalty. -- Kev
From: Nick Finnigan on 15 Jun 2010 15:19 Ret. wrote: > They seem to be all the rage at the moment and are suggested as an > economical alternative to a diesel. Certainly they seem to pull out all > the stops: good performance and excellent mpg - but what are they like > to drive? > > My diesel auto 75 is very relaxed on the motorways. At an indicated 80 > it is only doing around 2500 rpm. My son's old Passat petrol auto always > sounded very stressed and noisy at that sort of speed - revving very > much higher. I would prefer a relaxed diesel to a very high revving > petrol engine - but does the turbo-charger mean the revs are lower at > high speed? > > VW group 1.4 turbo petrol engined cars with the DSG gearbox (which gives > better acceleration and economy than the manual version) are attracting > my interest. It would be nice to have the benefits of an auto box > without the fuel penalty. TSI is turbo and super charged and will be about 2500 at an indicated 80 in top. Whether the engine is diesel or petrol or lpg is irrelevant.
From: Ret. on 15 Jun 2010 15:32 Nick Finnigan wrote: > Ret. wrote: >> They seem to be all the rage at the moment and are suggested as an >> economical alternative to a diesel. Certainly they seem to pull out >> all the stops: good performance and excellent mpg - but what are >> they like to drive? >> >> My diesel auto 75 is very relaxed on the motorways. At an indicated >> 80 it is only doing around 2500 rpm. My son's old Passat petrol auto >> always sounded very stressed and noisy at that sort of speed - >> revving very much higher. I would prefer a relaxed diesel to a very >> high revving petrol engine - but does the turbo-charger mean the >> revs are lower at high speed? >> >> VW group 1.4 turbo petrol engined cars with the DSG gearbox (which >> gives better acceleration and economy than the manual version) are >> attracting my interest. It would be nice to have the benefits of an >> auto box without the fuel penalty. > > TSI is turbo and super charged and will be about 2500 at an > indicated 80 in top. Whether the engine is diesel or petrol or lpg is > irrelevant. Thanks for that Nick. Good to know. -- Kev
From: Silk on 15 Jun 2010 15:39 On 15/06/2010 19:40, Ret. wrote: > They seem to be all the rage at the moment and are suggested as an > economical alternative to a diesel. Certainly they seem to pull out all > the stops: good performance and excellent mpg - but what are they like > to drive? > > My diesel auto 75 is very relaxed on the motorways. At an indicated 80 > it is only doing around 2500 rpm. My son's old Passat petrol auto always > sounded very stressed and noisy at that sort of speed - revving very > much higher. I would prefer a relaxed diesel to a very high revving > petrol engine - but does the turbo-charger mean the revs are lower at > high speed? It really depends. If an engine is producing more torque at a given RPM then the gearing can be higher to take advantage. As power is a product of torque and engine speed, a less torquey engine will need to rev higher to give the same power output. The reason diesels are ultimately less powerful is because they run out of torque at higher revs, even though they feel a lot more powerful at lower revs than a petrol engine. If the engine is inherently quieter, then it won't matter that it revs higher anyway. To be honest, your Rover is going to sound like a bag of nails up against any decent modern engine, diesel or petrol. > VW group 1.4 turbo petrol engined cars with the DSG gearbox (which gives > better acceleration and economy than the manual version) are attracting > my interest. It would be nice to have the benefits of an auto box > without the fuel penalty. The DSG, especially the newer 7 speed is an excellent gearbox. It wasn't available with the engine I wanted when I got my current Octavia, otherwise I'd have gone for it. The new VW group CR diesel engines are also excellent and are in a completely different league to your aging Rover.
From: Silk on 15 Jun 2010 15:42
On 15/06/2010 20:05, Ret. wrote: > We are selling the caravan and, once it's gone, have no need for such a > large car. Although we have not made a firm decision, we are considering > downsizing to a 'medium sector' car. Cough! Your Rover is already "medium sector". My Octavia has more room inside than a Rover 75. The boot-space is getting on for double. The R75 is only large on the outside. And even then it's not that big. |