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.
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 2021 Audi A4#3 in Wagons Get Your Price |  2021 BMW 3-Series#1 in Luxury Small Sedans Get Your Price |  2020 Cadillac CT4Get Your Price |  2020 Lexus IS |  2020 Mercedes-Benz C Class |  2020 Alfa Romeo Giulia#16 in Luxury Mid-Size Cars Get Your Price |
|---|---|---|---|---|---|
| Quick Specs | |||||
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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 entry-level 2020 Cadillac CT4 sedan presents a value that is quickly eroded by a lack of features standard on other luxury makes. |
The 2020 Lexus IS is polished and poised, but ultimately short on compelling qualities. |
The 2020 Mercedes-Benz C-Class is as gorgeous inside as it is outside, and it has moves to match. |
The 2020 Alfa Romeo Giulia combines agility and power in a sensuous Italian package. |
| MSRP From | |||||
| $39,100 | $41,250 | $32,995 | $38,560 | $41,400 | $39,400 |
| Gas Mileage | |||||
| 20 MPG City / 31 MPG Hwy | 16 MPG City / 36 MPG Hwy | 20 MPG City / 34 MPG Hwy | 18 MPG City / 30 MPG Hwy | 17 MPG City / 35 MPG Hwy | 17 MPG City / 33 MPG Hwy |
| Engine | |||||
| Intercooled Turbo Gas/Electric I-4 | Intercooled Turbo Premium Unleaded I-4 | Turbocharged I4 | Intercooled Turbo Premium Unleaded I-4 | Intercooled Turbo Premium Unleaded I-4 | Intercooled Turbo Premium Unleaded I-4 |
| EPA Class | |||||
| Compact Cars | Compact Cars | Compact Cars | Compact Cars | Compact Cars | Midsize Cars |
| Style Name | |||||
| Premium 40 TFSI quattro | 330i Sedan | 4-Door Sedan Luxury | IS 300 F SPORT RWD | C 300 Sedan | RWD |
| Drivetrain | |||||
| All Wheel | Rear Wheel Drive | Rear Wheel Drive | Rear Wheel Drive | Rear Wheel Drive | Rear Wheel Drive |
| Passenger Capacity | |||||
| 5 | 5 | 5 | 5 | 5 | 5 |
| Passenger Doors | |||||
| N/A | N/A | 4 | N/A | N/A | N/A |
| Body Style | |||||
| quattro Sedan | Sedan | Sedan | Sedan | Sedan | Sedan |
| Transmission | |||||
| Auto-Shift Manual w/OD | Automatic w/OD | Automatic | Automatic w/OD | Automatic w/OD | Automatic w/OD |
| Detailed Spec Comparison | |||||
| 2021 Audi A4 vs. 2021 BMW 3-Series | 2021 Audi A4 vs. 2020 Cadillac CT4 | 2021 Audi A4 vs. 2020 Lexus IS | 2021 Audi A4 vs. 2020 Mercedes-Benz C Class | 2021 Audi A4 vs. 2020 Alfa Romeo Giulia | |
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