2018 Audi A3

Compact Sedan Regular
Audi A3 2018
29MPG Combined
1 Trim
Updated February 27, 2026

Get the full picture on the 2018 Audi A3. As a Compact Sedan, it achieves 29 combined MPG and has not yet been rated by NHTSA. Below you’ll find detailed specs for every trim, plus recall information and competitor comparisons.

2018 Audi A3 Specifications

SpecValue
Combined MPG29 combined MPG
City MPG26
Highway MPG35
Body StyleCompact Sedan
Fuel TypeRegular
DriveFWD
Available Trims1

Annual Fuel Cost

Based on EPA estimates, the 2018 Audi A3 costs approximately $1,500 per year in fuel. This assumes 15,000 miles driven annually and current fuel prices.

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