McLaren has had car past month for its annual hibernation and warranty work:
Car has had a minor issue for months I never addressed where fuel cap actuator would prime constantly sometimes putting drain on battery. In Italy it became an issue as it would randomly pop open whilst driving causing an engine error message the same message was also triggered by poor fuel quality due to only 95 at some stations and hence knock sensor would be triggered.
So took it to McLaren a month ago for them to diagnose and resolve I also had them do a gearbox / clutch oil change as scheduled every 20k and having done around 8000 miles this year that was overdue.
They diagnosed the car had a snapped front spring so they fitted a new spring and damper as they change as complete assembled units so happy about that as year before the offside had a leaking damper so they changed that damper and spring plus bushes. That means cars front end suspension has had a full refresh now about £6000 worth of work all under warranty.
They also fitted a new fuel cap actuator and the heater failed whilst in their care and noticed heater resistor was always on and draining power so the heater and fuel cap was reason for my gremlins so car got a new heater module installed.
Collected car and drove home but unfortunately they had forgetting to calibrate the heater and I got engine system fault message again.
So today I’m back:
For a while I wait repair, heater should be simple recalibration so that direction vents and heat adjustment works, was a cold roof down drive in this morning but good fun.
As the car had been sat at McLaren for a month in freezing weather on less than half a tank we thought maybe fuel had gone off a bit and this causing message (no engine light) or knock sensor failing. Anyway brimmed tank with Vpower and every drive since no more messages so either poor fuel or gone off due to been sat in cold weather.
They are scanning knock sensors just in case and will replace all 4 under warranty if any issues so just waiting now.
All in all fingers crossed car is all fixed now and ready for another year of epic motoring in 2026 I’ve already booked a driving holiday to the Black Forest for May and South of France for September for some more epic European road driving.
Car has its little gremlins but has never let me down and still amazes me, 27k miles and counting now and the warranty is superb as it covers the entire car, a big improvement over Ferrari where warranty was not worth paper it was written on and it cost twice as much as McLaren.
, Gibbo, get them painted/powder coated in gold and it would really pop imo!
where as JLR are just **** at everything, all the time 
