2021 Audi A4 vs. Its Competition

2021 Audi A4 image
Aaron Cole Aaron Cole Managing Editor

The Audi A4 is most often compared to other German luxury sedans including the Mercedes-Benz C Class and BMW 3-Series.

The Audi is more reserved than both, and lacks the gee-whiz tech found in the Benz or the blistering powertrains from the 3-Series.

Audi’s more conservative but keeps pace with both.

The Cadillac CT4 is new and we haven’t yet driven it.

The current Lexus IS is on its way out, and will be replaced by a new version so discounts should be plentiful.

The Alfa is unloved—and a little catawampus inside, if we’re honest—but a blast to drive.

2021 Audi A4 image2021 Audi A4
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2021 BMW 3-Series image2021 BMW 3-Series
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2021 Cadillac CT4 image2021 Cadillac CT4
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2021 Lexus IS image2021 Lexus IS
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2021 Mercedes-Benz C Class image2021 Mercedes-Benz C Class
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2021 Alfa Romeo Giulia image2021 Alfa Romeo Giulia
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Quick Specs
The 2021 Audi A4 blends a conservative luxury compact car with spicy performance and robust wagon flavors.
The flexible 2021 BMW 3-Series lineup offers something for everyone, so long as they’re not smitten with SUVs.
The 2021 Cadillac CT4 is well-equipped and fun to drive, making it a good small sedan choice.
The 2021 Lexus IS doesn’t gain any ground on the more performance-oriented compact sedans, but it’s priced right.
Svelte, sporty, and somewhat understated, the 2021 Mercedes-Benz C-Class should be at the top of your compact luxury sedan shopping list.
Quick and sexy, the 2021 Alfa Romeo Giulia is an appealing Italian take on the sport sedan.
MSRP From     
Gas Mileage     
20 MPG City / 31 MPG Hwy16 MPG City / 36 MPG Hwy20 MPG City / 34 MPG Hwy19 MPG City / 31 MPG Hwy17 MPG City / 35 MPG Hwy17 MPG City / 33 MPG Hwy
Intercooled Turbo Gas/Electric I-4Intercooled Turbo Premium Unleaded I-4Turbocharged I4Intercooled Turbo Premium Unleaded I-4Intercooled Turbo Premium Unleaded I-4Intercooled Turbo Premium Unleaded I-4
EPA Class     
Compact CarsCompact CarsCompact CarsCompact CarsCompact CarsMidsize Cars
Style Name     
Premium 40 TFSI quattro330i Sedan4-Door Sedan LuxuryIS 300 RWDC 300 SedanRWD
All Wheel DriveRear Wheel DriveRear Wheel DriveRear Wheel DriveRear Wheel DriveRear Wheel Drive
Passenger Capacity     
Passenger Doors     
Body Style     
quattro SedanSedanSedanSedanSedanSedan
Auto-Shift Manual w/ODAutomatic w/ODAutomaticAutomatic w/ODAutomatic w/ODAutomatic w/OD
Detailed Spec Comparison
 2021 Audi A4 vs. 2021 BMW 3-Series2021 Audi A4 vs. 2021 Cadillac CT42021 Audi A4 vs. 2021 Lexus IS2021 Audi A4 vs. 2021 Mercedes-Benz C Class2021 Audi A4 vs. 2021 Alfa Romeo Giulia