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What is the fastest, you have ever driven on a highway.

110mph i probably would have gone higher had I not felt my car was not made for it.
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ArishMell · 70-79, M
I've touched 80mph once or twice, and only briefly, but my car's not really built for Autostrade speeds. That was probably overtaking downhill on a motorway, to pass one 40tonne lorry overtaking a couple of others at their speed difference of 3mph.

More importantly I do not intend to break the speed-limit! It is just not worth risking a hefty fine, probable "points" on my still-clean licence, and increased insurance premiums; just to save a few minutes that rarely need "saving".


I applied basic arithmetic to a journey I take occasionally, of about 310 miles each way with 210 on the motorway. The other 100 are on ordinary roads with many obstacles and speed limts.

The difference between 70mph and 60mph maintained throughout that entire motoway stretch is only 30 minutes!

So insignificant. (The arrival times on these journeys are not important. If they were I'd obviously start an hour earlier.)


It is of course impossible to achieve such driving in reality, and the mean speed for these journeys is <50mph, even with minimum fuelling and "T&P" stops to a minimum.

The significant difference is in fuel consumption, of course. I've not measured it but my car's most efficient cruising speed is probably 60-65mph.



The spped limits in the UK are 70mph on motorways and dual-carriageways, 60 on single-carriageway roads, except in built-up areas or where otherwise stated.