Driving to work. Car developed a misfire out of nowhere. Breakdown were pretty useless. Said it was probably coil pack. Long story short...... piston completely failed. 13 plate. 33k miles full main dealer history.
No nothing to do with coils. I have a full set off a very low mileage car If anyone needs any though! it's totally due to piston failure. Compression dropped to 75psi. I was lucky it held together as I drove it after being told it was a coil failure. Top ring held up bottom 2 complete failure due to the lower half of the piston failing and dropping into the sump.