What is the MPG of the Buick Regal? The hybrid Buick Regal can reach up to 19 MPG city and 31 MPG highway for a combined rating of 23 MPG. The Buick Regal with traditional internal combustion ...
Arriving in 1987, the GNX took the Buick Regal—which was already offered in go-fast Grand National form—and turned up the ...