*Update*
Forget the original figures below, after further discussion with Alfa Romeo, I now have the full 166 UK Production Figures for all variants, including for the years 1998 & 1999, which were previously missing.
I have created a pdf with the details
here, which you should be able to view using Acrobat Reader.
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Finally, here are the official sales figures for Alfa Romeo 166s in the UK. Unfortunately, figures for 1999 are not available, ie. lost

, so this is for Y2K to end of production.
I am still trying to obtain a breakdown per year of production but, in the meantime, this makes interesting reading.
Total Production over this period was 1940 units.
Model Designation | Model Derivative | Total Production No.
100 | 166 2.0 TS TURISMO | 3
151 | 166 2.0 T SPARK | 357
152 | 166 2.0 T.SPARK 16V | 429
155 | 166 2.5 V6 | 138
156 | 166 2.5 V6 24V | 115
300 | 166 2.0 TS LUSSO | 113
303 | 166 3.2 V6 LUSSO | 44
305 | 166 3.0 V6 SPORTRONIC | 36
557 | 166 3.0 V6 24V SUPER | 153
558 | 166 3.0 V6 SUPER | 131
655 | 166 2.5 V6 SPORTRONIC | 123
657 | 166 3.0 V6 24V SPORTRONIC | 164
658 | 166 3.0 V6 SPORTRONIC | 134