Audi S6 vs Buick Regal Sportback Dimensions & Size Comparison

Comparing 2018 catalog dimensions. Audi S6 · Buick Regal Sportback

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

Side view
  • Length194.4 in
  • Height56.8 in
  • Wheelbase114.8 in
  • Ground clearance4.6 in
  • Curb weight4,497 lb
Front / width
  • Width73.8 in
  • Buick Regal Sportback width73.3 in

Which is bigger?

  • Length: Buick Regal Sportback is 1.5 in shorter (194.4 in vs 192.9 in)
  • Width: Buick Regal Sportback is 0.5 in narrower (73.8 in vs 73.3 in)
  • Height: Buick Regal Sportback is 0.5 in taller (56.8 in vs 57.3 in)
  • Wheelbase: Audi S6 has a 3.4 in longer wheelbase (114.8 in vs 111.4 in)
  • Curb weight: Audi S6 is 575 lb heavier (4,497 lb vs 3,922 lb)

Biggest size differences

  1. Curb weight: Audi S6 is 575 lb heavier (4,497 lb vs 3,922 lb)
  2. Wheelbase: Audi S6 has a 3.4 in longer wheelbase (114.8 in vs 111.4 in)
  3. Height: Buick Regal Sportback is 0.5 in taller (56.8 in vs 57.3 in)
  4. Length: Buick Regal Sportback is 1.5 in shorter (194.4 in vs 192.9 in)
  5. Width: Buick Regal Sportback is 0.5 in narrower (73.8 in vs 73.3 in)

Practical verdicts

  • Easier to fit in a short garageBuick Regal SportbackBuick Regal Sportback is shorter by 1.5 in Check garage fit for Audi S6 · garage fit for Buick Regal Sportback
  • Narrower for tight parkingBuick Regal SportbackBuick Regal Sportback is narrower by 0.5 in
  • Smaller exterior footprintBuick Regal SportbackBased on length × width (Buick Regal Sportback)

Dimension comparison

SpecAudi S6Buick Regal SportbackDifference
Length194.4 in192.9 in1.5 in
Width73.8 in73.3 in0.5 in
Height56.8 in57.3 in0.5 in
Wheelbase114.8 in111.4 in3.4 in
Ground clearance4.6 in
Curb weight4,497 lb3,922 lb575 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.