Buick Regal Sportback vs BMW M3 Dimensions & Size Comparison

Comparing 2018 catalog dimensions. Buick Regal Sportback · BMW M3

Same scale for both vehicles. Generic silhouette — proportional to measured length, height, width, wheelbase, and clearance.

Side view
  • Length192.9 in
  • Height57.3 in
  • Wheelbase111.4 in
  • Curb weight3,748 lb – 4,096 lb
Front / width
  • Width73.3 in
  • BMW M3 width73.9 in

Which is bigger?

  • Length: BMW M3 is 8.4 in shorter (192.9 in vs 184.5 in)
  • Width: Buick Regal Sportback is 0.6 in narrower (73.3 in vs 73.9 in)
  • Height: Buick Regal Sportback is 1.2 in taller (57.3 in vs 56.1 in)
  • Wheelbase: Buick Regal Sportback has a 0.7 in longer wheelbase (111.4 in vs 110.7 in)
  • Curb weight: Buick Regal Sportback is 382 lb heavier (3,922 lb vs 3,540 lb)

Biggest size differences

  1. Curb weight: Buick Regal Sportback is 382 lb heavier (3,922 lb vs 3,540 lb)
  2. Length: BMW M3 is 8.4 in shorter (192.9 in vs 184.5 in)
  3. Height: Buick Regal Sportback is 1.2 in taller (57.3 in vs 56.1 in)
  4. Width: Buick Regal Sportback is 0.6 in narrower (73.3 in vs 73.9 in)
  5. Wheelbase: Buick Regal Sportback has a 0.7 in longer wheelbase (111.4 in vs 110.7 in)

Practical verdicts

  • Easier to fit in a short garageBMW M3BMW M3 is shorter by 8.4 in Check garage fit for Buick Regal Sportback · garage fit for BMW M3
  • Narrower for tight parkingBuick Regal SportbackBuick Regal Sportback is narrower by 0.6 in
  • Smaller exterior footprintBMW M3Based on length × width (BMW M3)

Dimension comparison

SpecBuick Regal SportbackBMW M3Difference
Length192.9 in184.5 in8.4 in
Width73.3 in73.9 in0.6 in
Height57.3 in56.1 in1.2 in
Wheelbase111.4 in110.7 in0.7 in
Ground clearance4.7 in
Curb weight3,922 lb3,540 lb382 lb

Values use trim midpoints when a model year lists a range.

Compare by year

Overlapping model years with dimension data.

Already own one of these cars?

Jump to maintenance sizes on the vehicle page — tires, wipers, battery, and oil when present in the catalog.