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Size comparison · drawn to scale

Mercedes-Benz A-Class W177 vs Audi A3 8Y: size comparison

  • Length A-Class W177 76 mm3 in longer
  • Width A3 8Y 20 mm0.8 in wider
  • Height About the same height
  • Boot A3 8Y 25 L0.9 cu ft more

Car 1 blue, solid outline

A-Class W177 Mercedes-Benz · 2018–present · Hatchback A-Class W177 4,419 × 1,796 × 1,440 mm14 ft 6 in × 5 ft 11 in × 4 ft 9 in Change

Car 2 coral, dashed outline

A3 8Y Audi · 2020–present · Hatchback A3 8Y 4,343 × 1,816 × 1,449 mm14 ft 3 in × 5 ft 11 in × 4 ft 9 in Change
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  • Car 1, blue, solid outline: A-Class W177
  • Car 2, coral, dashed outline: A3 8Y
0 m1 m2 m3 m4 m5 m1 m0 ft1 ft2 ft3 ft4 ft5 ft6 ft7 ft8 ft9 ft10 ft11 ft12 ft13 ft14 ft15 ft16 ft17 ft18 ft19 ft1 ft2 ft3 ft4 ftWheelbase 2,729 mmWheelbase 8 ft 11 inLength 4,419 mmLength 14 ft 6 in1,440 mm4 ft 9 inWheelbase 2,636 mmWheelbase 8 ft 8 inLength 4,343 mmLength 14 ft 3 in1,449 mm4 ft 9 in

Scale about 1:20 on a desktop screen · grid 500 mm1 ft · in Overlay both cars start at the front bumper Side view: dashed lines mark the axles

Dimensions and difference

The A-Class W177 is 76 mm3 in longer, 20 mm0.8 in narrower and 9 mm0.4 in lower than the A3 8Y. Its wheelbase is 93 mm4 in longer.

DimensionA-Class W177A3 8YDifference, car 1 vs car 2
Length4,419 mm14 ft 6 in14 ft 6 in4,419 mm4,343 mm14 ft 3 in14 ft 3 in4,343 mm +76 mm+3 in +1.7%
Width1,796 mm5 ft 11 in5 ft 11 in1,796 mm1,816 mm5 ft 11 in5 ft 11 in1,816 mm −20 mm−0.8 in −1.1%
Height1,440 mm4 ft 9 in4 ft 9 in1,440 mm1,449 mm4 ft 9 in4 ft 9 in1,449 mm −9 mm−0.4 in −0.6%
Wheelbase2,729 mm8 ft 11 in8 ft 11 in2,729 mm2,636 mm8 ft 8 in8 ft 8 in2,636 mm +93 mm+4 in +3.5%
Footprint7.94 m²85.4 sq ft85.4 sq ft7.94 m²7.89 m²84.9 sq ft84.9 sq ft7.89 m² +0.05 m²+0.5 sq ft +0.6%
Boot355 L12.5 cu ft12.5 cu ft355 L380 L13.4 cu ft13.4 cu ft380 L −25 L−0.9 cu ft −6.6%
Kerb weight1,350–1,680 kg2,976–3,704 lb2,976–3,704 lb1,350–1,680 kg1,355–1,470 kg2,987–3,241 lb2,987–3,241 lb1,355–1,470 kg −5 kg−11 lb −0.4%

Width without mirrors. Figures come from the catalog version pages; the drawing uses the same numbers. Body outlines are generic for the body type - proportions are exact, styling is not. Weight difference compares the lightest versions.

Garage and parking

A typical single garage is about 5.5 × 3.0 m18 ft 1 in × 9 ft 10 in inside; a parking bay about 5.0 × 2.5 m16 ft 5 in × 8 ft 2 in. Room to open a door: about 600 mm2 ft each side.

A-Class W177

Single garage
Fits 1,081 mm3 ft 7 in to spare in length, 602 mm2 ft 0 in each side
Parking bay
Tight 581 mm1 ft 11 in to spare in length, 352 mm1 ft 2 in each side

A3 8Y

Single garage
Tight 1,157 mm3 ft 10 in to spare in length, 592 mm1 ft 11 in each side
Parking bay
Tight 657 mm2 ft 2 in to spare in length, 342 mm1 ft 1 in each side

Check your own garage with these cars

Frequently asked questions

Which is bigger, the Mercedes-Benz A-Class W177 or the Audi A3 8Y?

The Mercedes-Benz A-Class W177 is the bigger car by footprint (length × width). The A-Class W177 is 76 mm longer, 20 mm narrower and 9 mm lower than the A3 8Y. Its wheelbase is 93 mm longer.

Will the Mercedes-Benz A-Class W177 and the Audi A3 8Y fit in a standard garage?

In a typical single garage of 5.5 × 3.0 m inside: The Mercedes-Benz A-Class W177 fits with room to open the doors (1,081 mm to spare in length, 602 mm each side). The Audi A3 8Y fits, but it is tight to get out (1,157 mm to spare in length, 592 mm each side). Widths are without mirrors; check your own garage with our garage checker.

Which has the bigger boot?

The Audi A3 8Y: 380 L against 355 L in the Mercedes-Benz A-Class W177 (seats up, as quoted by the maker).