That's odd. Official VW material states this:
Perhaps I'm missing something?
View attachment 59462
The UK Edition 30 and Pirelli editions are definitely 9.8:1 CR and I'm almost positive yours will be too as they are made in the same place with the same spec. I have VW's own brochure which says that the ED30 CR is 10.5:1, but that too was wrong.
This is the info we have.
Engine code BYD
Manufactured 11.06 ►
Emissions fulfil EU 4 standard, EU 2 ddk
Capacity cm3 1984
Output kW at rpm 169/6000
Torque Nm at rpm 300/2200
Bore Ø mm 82.5
Stroke mm 92.8
Compression ratio 9.8
Valves per cylinder 4
RON 98 unleaded1)
Injection, ignition Motronic MED 9.1
Type of mixture formation homogeneous
Knock control 2 sensors
Lambda regulation 2 probes
Three-way catalytic converter yes
Variable valve timing yes
Electronic power control yes
I'll see if I can dig out a more official page:thumbsup: