Compare Dimensions Side by Side 2021 Audi A3 Sportback vs. 2025 BMW X3
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 2025 BMW X3 compare in size:
In terms of length, the 2025 BMW X3 comes in at 4755 mm (187.20 in), giving it a 412 mm (16.22 in) (8.7 %) advantage over the 2021 Audi A3 Sportback at 4343 mm (170.98 in). Looking at width, the 2025 BMW X3 stretches to 1920 mm (75.59 in), making it 104 mm (4.09 in) (5.4 %) wider than the 2021 Audi A3 Sportback at 1816 mm (71.50 in). As for height, the 2025 BMW X3 reaches 1660 mm (65.35 in), which is 202 mm (7.95 in) (12.2 %) taller than the 2021 Audi A3 Sportback at 1458 mm (57.40 in).
Overall, the 2025 BMW X3 is longer, wider and taller than the 2021 Audi A3 Sportback.
Length
4343 mm171.0 in
4755 mm187.2 in
Width
1816 mm71.5 in
1920 mm75.6 in
Height
1458 mm57.4 in
1660 mm65.4 in
4343 mm171.0 in🔴 -412 mm-16.2 in (-8.7%)
4755 mm187.2 in🟢 +412 mm+16.2 in (+9.5%)
1816 mm71.5 in🔴 -104 mm-4.1 in (-5.4%)
1920 mm75.6 in🟢 +104 mm+4.1 in (+5.7%)
1458 mm57.4 in🔴 -202 mm-8.0 in (-12.2%)
1660 mm65.4 in🟢 +202 mm+8.0 in (+13.9%)
2021 Audi A3 Sportback
2025 BMW X3
Side-by-Side Specs: Dimensions, Weight & More
General Info
Body Style:
Hatchback
SUV
Model Year:
2021
2025
Production:
2020-2024 Discontinued Model
2024-present Current Model
Dimensions
Length:
4343 mm171.0 in 🔴 -412 mm-16.2 in (-8.7%)
4755 mm187.2 in 🟢 +412 mm+16.2 in (+9.5%)
Width:
1816 mm71.5 in 🔴 -104 mm-4.1 in (-5.4%)
1920 mm75.6 in 🟢 +104 mm+4.1 in (+5.7%)
Width (Folded Mirrors):
-
-
Width (Opened Mirrors):
1984 mm78.1 in 🔴 -148 mm-5.8 in (-6.9%)
2132 mm83.9 in 🟢 +148 mm+5.8 in (+7.5%)
Height:
1449-1458 mm57.0-57.4 in 🔴 -211 mm-8.3 in (-12.7%) - 🔴 -202 mm-8.0 in (-12.2%)
1660 mm65.4 in 🟢 +202 mm+8.0 in (+13.9%) - 🟢 +211 mm+8.3 in (+14.6%)
Ground Clearance:
-
208-216 mm8.2-8.5 in
Trunk Capacity:
280-380 liter9.9-13.4 cu ft 🔴 -290 liter-10.2 cu ft (-50.9%) - 🔴 -80 liter-2.8 cu ft (-17.4%)
460-570 liter16.2-20.1 cu ft 🟢 +80 liter+2.8 cu ft (+21.1%) - 🟢 +290 liter+10.2 cu ft (+103.6%)
Trunk Capacity (Max):
1100-1200 liter38.8-42.4 cu ft 🔴 -600 liter-21.2 cu ft (-35.3%) - 🔴 -400 liter-14.1 cu ft (-25.0%)
1600-1700 liter56.5-60.0 cu ft 🟢 +400 liter+14.1 cu ft (+33.3%) - 🟢 +600 liter+21.2 cu ft (+54.5%)
