The
Isotope Green (Lemon Yellow in Europe) marks the first time a limited
edition Beetle was available with the TDI engine. The Isotope available
in every possible GLS configuration - 2.0 gasoline, TDI diesel, 1.8
turbo; automatic or manual transmission; with various options such as
a power sunroof, heated seats and foglights. Unlike the European 'Panama'
interior, American customers had a choice of either black or grey leather.