2021 Mercedes-Benz C-class 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 Mercedes-Benz C-class and the 2026 Audi Q3 III compare in size:
In terms of length, the 2021 Mercedes-Benz C-class measures 4842 mm (190.63 in), making it 311 mm (12.24 in) (6.4 %) longer than the 2026 Audi Q3 III at 4531 mm (178.39 in). Looking at width, the 2021 Mercedes-Benz C-class spans 1900 mm (74.80 in), which is 41 mm (1.61 in) (2.2 %) broader than the 2026 Audi Q3 III at 1859 mm (73.19 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 Mercedes-Benz C-class at 1458 mm (57.40 in).
Overall, the 2021 Mercedes-Benz C-class is longer and wider than the 2026 Audi Q3 III, while the 2026 Audi Q3 III is taller than the 2021 Mercedes-Benz C-class.
Length
4842 mm190.6 in
4531 mm178.4 in
Width
1900 mm74.8 in
1859 mm73.2 in
Height
1458 mm57.4 in
1628 mm64.1 in
4842 mm190.6 in🟢 +311 mm+12.2 in (+6.9%)
4531 mm178.4 in🔴 -311 mm-12.2 in (-6.4%)
1900 mm74.8 in🟢 +41 mm+1.6 in (+2.2%)
1859 mm73.2 in🔴 -41 mm-1.6 in (-2.2%)
1458 mm57.4 in🔴 -170 mm-6.7 in (-10.4%)
1628 mm64.1 in🟢 +170 mm+6.7 in (+11.7%)
2021 Mercedes-Benz C-class
2026 Audi Q3 III
Side-by-Side Specs: Dimensions, Weight & More
General Info
Body Style:
Sedan
SUV
Model Year:
2021
2026
Production:
n/a
2025-present Current Model
Dimensions
Length:
4751-4842 mm187.0-190.6 in 🟢 +220 mm+8.7 in (+4.9%) - 🟢 +311 mm+12.2 in (+6.9%)
4531 mm178.4 in 🔴 -311 mm-12.2 in (-6.4%) - 🔴 -220 mm-8.7 in (-4.6%)
Width:
1820-1900 mm71.7-74.8 in 🔴 -39 mm-1.5 in (-2.1%) - 🟢 +41 mm+1.6 in (+2.2%)
1859 mm73.2 in 🔴 -41 mm-1.6 in (-2.2%) - 🟢 +39 mm+1.5 in (+2.1%)
Width (Folded Mirrors):
-
-
Width (Opened Mirrors):
2033 mm80.0 in 🔴 -55 mm-2.2 in (-2.6%) - 🔴 -54 mm-2.1 in (-2.6%)
2088 mm82.2 in 🟢 +54 mm+2.1 in (+2.7%) - 🟢 +55 mm+2.2 in (+2.7%)
Height:
1437-1458 mm56.6-57.4 in 🔴 -191 mm-7.5 in (-11.7%) - 🔴 -143 mm-5.6 in (-8.9%)
1601-1628 mm63.0-64.1 in 🟢 +143 mm+5.6 in (+9.8%) - 🟢 +191 mm+7.5 in (+13.3%)
Ground Clearance:
-
-
Trunk Capacity:
280-455 liter9.9-16.1 cu ft 🔴 -208 liter-7.3 cu ft (-42.6%) - 🟢 +80 liter+2.8 cu ft (+21.3%)
375-488 liter13.2-17.2 cu ft 🔴 -80 liter-2.8 cu ft (-17.6%) - 🟢 +208 liter+7.3 cu ft (+74.3%)
