Having driven some 2500 miles in my MY 22 Plus Four, and having had the swirl pot mod, I had hoped I would not suffer from coolant leaks. Sadly, today I have to report that as I pulled into my driveway, the coolant system let go in a big way and deposited more than a gallon of green coolant all over my drive and garage floor. Not a drip, more like a steady flow. I have informed my dealer to collect. Lucky it is not my everyday car and lucky it happened at my house. This should not happen to a modern new car.
Update, though I only reported the problem to my dealership yesterday (a Sunday), the dealer principle replied immediately by email and the recovery truck was on its way to me first thing this morning. Excellent service. The dealership? Williams Automobiles. Thank you Henry and Tony.