First PRODUCTION flat four diesel. :-)
http://www.ltv-vwc.org.uk/wheelspin/ws_aug-sept-2003/diesel-beetle.html

Scott Daniel - Shazam wrote:
> As I understand it, it will be an opposed four, like all 'regular' subaru
> engines, and thus I would expect, would fit in a vanagon.
> Cracked heads are not a subaru regular thing, so I would hope they'll get
> that right.
> It will also be the world's first opposed four  ( boxer layout ) turbo
> diesel engine.