2021 Audi A3 Sportback vs. 2026 Audi Q3 III Dimensions Comparison
Compare the size of two cars side by side and see their differences at a glance. Simply enter the vehicle names, and our tool creates a clear visual comparison of their length, width, and height. This makes it easy to find out which car is longer, wider, or taller, and helps you better understand their overall proportions. Whether you are checking if a car will fit in your garage, comparing everyday models, or exploring larger SUVs, this tool provides a straightforward way to see all key dimensions in one place.
Here’s how the 2021 Audi A3 Sportback and the 2026 Audi Q3 III compare in size:
In terms of length, the 2026 Audi Q3 III comes in at 4531 mm (178.39 in), giving it a 188 mm (7.40 in) (4.1 %) advantage over the 2021 Audi A3 Sportback at 4343 mm (170.98 in). Looking at width, the 2026 Audi Q3 III stretches to 1859 mm (73.19 in), making it 43 mm (1.69 in) (2.3 %) wider than the 2021 Audi A3 Sportback at 1816 mm (71.50 in). As for height, the 2026 Audi Q3 III reaches 1628 mm (64.09 in), which is 170 mm (6.69 in) (10.4 %) taller than the 2021 Audi A3 Sportback at 1458 mm (57.40 in).
Overall, the 2026 Audi Q3 III is longer, wider and taller than the 2021 Audi A3 Sportback.
Length
4343 mm171.0 in
4531 mm178.4 in
Width
1816 mm71.5 in
1859 mm73.2 in
Height
1458 mm57.4 in
1628 mm64.1 in
4343 mm171.0 in🔴 -188 mm-7.4 in (-4.1%)
4531 mm178.4 in🟢 +188 mm+7.4 in (+4.3%)
1816 mm71.5 in🔴 -43 mm-1.7 in (-2.3%)
1859 mm73.2 in🟢 +43 mm+1.7 in (+2.4%)
1458 mm57.4 in🔴 -170 mm-6.7 in (-10.4%)
1628 mm64.1 in🟢 +170 mm+6.7 in (+11.7%)
2021 Audi A3 Sportback
2026 Audi Q3 III
Side-by-Side Specs: Dimensions, Weight & More
General Info
Body Style:
Hatchback
SUV
Model Year:
2021
2026
Production:
2020-2024 Discontinued Model
2025-present Current Model
Dimensions
Length:
4343 mm171.0 in 🔴 -188 mm-7.4 in (-4.1%)
4531 mm178.4 in 🟢 +188 mm+7.4 in (+4.3%)
Width:
1816 mm71.5 in 🔴 -43 mm-1.7 in (-2.3%)
1859 mm73.2 in 🟢 +43 mm+1.7 in (+2.4%)
Width (Folded Mirrors):
-
-
Width (Opened Mirrors):
1984 mm78.1 in 🔴 -104 mm-4.1 in (-5.0%) - 🔴 -103 mm-4.1 in (-4.9%)
2088 mm82.2 in 🟢 +103 mm+4.1 in (+5.2%) - 🟢 +104 mm+4.1 in (+5.2%)
Height:
1449-1458 mm57.0-57.4 in 🔴 -179 mm-7.0 in (-11.0%) - 🔴 -143 mm-5.6 in (-8.9%)
1601-1628 mm63.0-64.1 in 🟢 +143 mm+5.6 in (+9.8%) - 🟢 +179 mm+7.0 in (+12.4%)
Ground Clearance:
-
-
Trunk Capacity:
280-380 liter9.9-13.4 cu ft 🔴 -208 liter-7.3 cu ft (-42.6%) - 🟢 +5 liter+0.2 cu ft (+1.3%)
375-488 liter13.2-17.2 cu ft 🔴 -5 liter-0.2 cu ft (-1.3%) - 🟢 +208 liter+7.3 cu ft (+74.3%)
Trunk Capacity (Max):
1100-1200 liter38.8-42.4 cu ft 🔴 -286 liter-10.1 cu ft (-20.6%) - 🔴 -93 liter-3.3 cu ft (-7.2%)
1293-1386 liter45.7-48.9 cu ft 🟢 +93 liter+3.3 cu ft (+7.8%) - 🟢 +286 liter+10.1 cu ft (+26.0%)
