Overheating and engine replacement = lemon?

[brightonali]

We bought a Ford CMAX 1.0Litre Ecoboost (2013 reg) used in 2015, not knowing that the degas hoses were inadequate. (Ford recalled the Focus cars with the same parts, but not the CMAX models). Our degas hose failed this August, leading to the engine 'fully overheating, the cylinder head warping and the piston bores being internally damaged' (Ford garage report).  After complaining to Ford CRC they have fully funded a replacement engine - good.  However since then, the car has broken down twice and spent 16 of last 24 days off the road, with the garage eventually finding a melted electrical component which was interfering with the spark plugs.
My question is this: after such a severe overheating incident, and the subsequent disruption of taking out and replacing the engine, is my car now what we might call a 'lemon' - ie significantly less reliable than a car that hasn't been through all that.  Or should I feel confident that it is fixed and fine?
I only have two breakdown calls left on my insurance and have already spent £900 on hire cars so far while waiting for it to be fixed so want to decide quickly what to do next.

[E-bmw]

Unfortunately as my crystal ball isn't as reliable as I would like there is no way of answering that question with any degree of certainty.

As with anything if it is repaired properly it should be as good as it was beforehand......Was it repaired properly?.....Was it any good beforehand?

None of us could possibly say.

[GreenV8S]

I don't see any reason to expect it to be less reliable because of the work done. I would be worried about the pre-existing weakness in the cooling system, if that hasn't been fixed as part of this repair.

[JONATHAN_11_80]

No reason why the car will be less reliable if ford have fitted the engine. Does it run well now? What caused the breakdowns after the new engine was fitted.