to increase mpg what is the normal engine warm up time ?

[scottm72]

just out of interest to increase the starting mpg what is the normal engine warm up time from cold, i usually dont allow any warm up time tbh but would be interested if anyone knew

[Banham]

If it is cold i always let my engine warm up. I never drive off until my revs have dropped. But not to sure when it starts to save mpg but the first recording i get on the display is around 10mpg

[Tortaruga]

i usually dont allow any warm up time

Your KO3/4 won't thank you for this.

[RedRobin]

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When my engine (Mk5 GTI K03) first starts up the revs are just over ~1000. I wait for the revs to drop below 1000rpm and for the engine sound to settle before I engage gear. This can take as long as a couple of minutes.

It's kinder to the DSG gearbox and allows fluids to circulate and automatic processes to happen.

I'm not aware of mpg being effected by this at all and wouldn't expect it to be.

Obviously it's also good practice not to use higher revs until at least the temp gauge is centred - Unfortunately the GTI doesn't have an OEM oil temperature gauge.

[scottm72]

i usually dont allow any warm up time

Your KO3/4 won't thank you for this.

dude us noobs out there dont know ehat a K03/4 is, sorry but can you dumb that down 

[RedRobin]

dude us noobs out there dont know ehat a K03/4 is, sorry but can you dumb that down  

....K03 is the turbocharger which is standard on the Mk5 GTI and K04 is the turbo which is standard (aka OEM) on the Ed30 (Edition 30 Mk5 GTI).  

Actually, it's the engine as much as the turbo that won't thank you for cold starts without any warm up or revs settling.

[scottm72]

.
When my engine (Mk5 GTI K03) first starts up the revs are just over ~1000. I wait for the revs to drop below 1000rpm and for the engine sound to settle before I engage gear. This can take as long as a couple of minutes.

It's kinder to the DSG gearbox and allows fluids to circulate and automatic processes to happen.

I'm not aware of mpg being effected by this at all and wouldn't expect it to be.

Obviously it's also good practice not to use higher revs until at least the temp gauge is centred - Unfortunately the GTI doesn't have an OEM oil temperature gauge.

thanks for that rr, im thinking if i drive straight off then the mpg will be worse but yes i guess it would be good practice in general to wait until the rpms reduce on the idle before engaging gear, fluids circulating etc,,,,, btw the temp gauge in my old mk4 took about 10 minutes to centre lol

[scottm72]

dude us noobs out there dont know ehat a K03/4 is, sorry but can you dumb that down  

....K03 is the turbocharger which is standard on the Mk5 GTI and K04 is the turbo which is standard (aka OEM) on the Ed30 (Edition 30 Mk5 GTI).  

right got that now, so i will have a K03 ( mk5 gti ) so i guess to be nice wait for the rpm to calm down before driving 

[RedRobin]

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When I lived in London a friend of mine had a Ferrari (well, several) and he used to spend literally about 4 minutes warming up the engine. Older technology but the same principles apply. It's completely logical: Going from zero revs and cold fluid temperatures to thousands of revs per minute is not kind to any engine. But most people don't realise or care about this.

I think it's more important than the mpg.

[scottm72]

.
When I lived in London a friend of mine had a Ferrari (well, several) and he used to spend literally about 4 minutes warming up the engine. Older technology but the same principles apply. It's completely logical: Going from zero revs and cold fluid temperatures to thousands of revs per minute is not kind to any engine. But most people don't realise or care about this.

I think it's more important than the mpg.

yes i agree, thanks for that rr, will do in future

[stealthwolf]

I tend to drive off almost instantly but I keep the revs to below 2000rpm. IIRC the car's components are designed in the knowledge that they will warm up at different rates and hence keeping the engine at idle for minutes at a time means some parts of a car will heat up more quickly than others and at a different rate to planned.

[Sonic6103]

I do the same as Stealthwolf. I only have it running for around 10 seconds before setting off sometimes but I keep the revs very low, around 2,000 or less. I just make sure I always let it cool down, sometimes just for 10-20 seconds but if I do this then I'll have already pretty much been running on tick over for the last mile or so n not in boost.

Some people will obviously say that's wrong but it's just the way I do it and I've never had any problems in all the turbo cars I've had :)

[stealthwolf]

+1 for no boost in the last mile or so of a journey. I normally wait a few seconds before switching off but if I've not been able to drive without boost in the previous mile, I keep the car idling for a little longer.

[andrewparker]

I'd love the luxury of even 1 minute to warm an engine first thing in the morning!

[Andy]

 increase mpg what is the normal engine warm up time
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