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

[GrayMK5GTI]

Robin, I wonder how many minutes you have spent waiting for the revs to drop in 104,000 miles. 

Probably most of a day in total 

....Possibly, but I have peace of mind.

Are you suggesting that I have wasted a day of my life? 

Haha I was very careful to avoid the word "wasted" 

[scottm72]

guys i think this discussion has proved one thing, everyone has there own way of starting up and even the car's handbook contradicts the service manager at my local dealer, according to him you should give the engine at least a minute or so to distribute fluids properly instead of forcing it through 5 seconds after the engine has been off.
i think this argument could go on forever here but i tend to agree with the people who let there engines warm up a little,,,, it kind of makes sense,,, i mean you take anything on this planet and ram the arse of it straight away from cold and you are going to have problems, same with your suspension - it takes time to loosen up, brakes as well so why not the engine.
as soon as i start my car on cold morning my rpm is ticking at 900,,,, checked it 4 days in a row and the same every day,,,, keep forgetting to check it say 10 minutes later though,,,

thanks everyone for your input regarding this subject, personally as robin says giving the car a minute or so and keeping the revs down for the first few miles seems the most sensible way, but everyone to there own, that's the one im going for though.

PS----- WHERE DOES THAT GUY STAY EXACTLY WHO LEAVES HIS CAR RUNNING,,,  :GATE OR NO GATE 

[john87]

It used to make me cringe when I guy at work would basically start up his diesel mondeo and drive away the minute it was off the starter 

[GrayMK5GTI]

Just a little more to add on this subject. Modern Fully Synthetic oils (Like the Castrol Edge we use) are designed to protect your engine from the moment you turn the key. Modern lubrication systems in the engine are designed to do the same.

Theres millions of engines (not just TFSI's), that get driven straight from cold all over the world without a problem.

Also, that "high idle" is to generate heat to warm up the CAT, as the cat needs the heat to be efficient 

The key is not to use high revs / load when the engine is cold, that way you warm it up as quickly as possible by driving it (cars dont warm up much at all when idling).

Just my factual 2 pence 

[Dan648v]

I would say just drive em without too much load, don't take the Michael with the revs, no positive boost and let the fluids circulate 

[RedRobin]

Also, that "high idle" is to generate heat to warm up the CAT, as the cat needs the heat to be efficient 

....Good to learn that 

In the old days, that high but diminishing idle would be an automatic choke on fuelling.

[GrayMK5GTI]

Also, that "high idle" is to generate heat to warm up the CAT, as the cat needs the heat to be efficient 

....Good to learn that 

In the old days, that high but diminishing idle would be an automatic choke on fuelling.

That may also be part of it - the T-FSI retains an automatic choke