"Physically the Miata has grown in just about every measurable dimension, with a 2.6-inch longer wheelbase, as well as a 3.0-inch wider front track and 2.1-inch wider rear track. Overall length and height have increased nominally, each by just 0.8 inch, but the Miata is now measurably wider, by 1.6 inches".
BMW's 3 series has gotten so big that BMW has now introduced a 1-series as their entry level car.
In this picture, the Miata looks a lot like the S2000 and
from this angle, it looks a lot like the Z4 roadster.
