I have been away so not run the car for over 2 weeks, voltage 12.2 & temperature here -3 degrees. The car started perfectly so I am 100% convinced that the switch to standard octane UK fuel has completely fixed the cold starting issue.
Your issue sounds different to the one that a lot of us have been experiencing. There will be multiple different issues across thousands of cars I am sure. The fuel change is worth a try for many people - judge it after 2nd fill. Mine went from bad start every time to absolutely perfect every...
Premium means branded non supermarket fuel so it has better additives whether 95 or 97-99 octane rating. I have been told by someone with good knowledge of the facts on this at Hethel that the lower octane rating actually helps this issue.
While ECU / software is the underlying problem I am now pretty sure that the type of fuel used does make a difference. I have generally used Good quality E5 Fuel (Shell / similar) and had cold starting issues but having switched to lower octane E10 is has started fine every time (once the higher...
Thanks - very interesting view. I suspect it won’t change many people’s choices. Not sure if anyone knows the time difference for the Cup2’s vs the Goodyears but I suspect that’s most of the difference. I still won’t be taking the Cayman or anything else - very happy with my manual V6
And to add, outside temperature makes no difference, nor is damp an issue & always started in the same garage. So it is an intermittent issue without obvious cause right now. I have given Lotus this thread so let’s see what they find. It’s not a big issue for me right now
This week I had to put 95 octane fuel in as i have very little left in the tank & on the motorway. No issues cold starting on that fuel either whereas I had issues in the past. My bet is still a mechanical issue with fuel flow or less likely, software
The January software update appears to have fixed the starting issue from the update applied last summer - so far mine has worked fine. The occasional cold start stall on 1st press of starter is still under investigation so hopefully there will be a fix for that soon. At least this is...