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2021 Mercedes-Benz A-Class: What's New, Specs & Features
Last updated August 4, 2026
The most important change for the 2021 Mercedes-Benz A-Class is that blind-spot monitoring with exit warning became standard across the lineup. Otherwise, this is a light update with no redesign or major powertrain, cabin, or chassis changes.
About the 2021 Mercedes-Benz A-Class
First US-market A-Class sedan generation (2019-2022), third model year.
Mercedes positions the A-Class as the smallest and most accessible sedan in its lineup without stripping away the brand’s signature feel. The brochure says it is “a smaller Mercedes-Benz—but not a lesser one,” emphasizing the digital dashboard, voice-controlled infotainment, upscale cabin design, panoramic roof, and advanced safety features. For most buyers, it is a compact luxury sedan that delivers Mercedes style and technology in an easier-to-park, easier-to-own package than the brand’s larger sedans.
The A 220 is the compact, everyday entry point to Mercedes-Benz, with a panoramic glass roof, twin 7-inch screens, voice control, smartphone integration, and power front seats. The A 220 4MATIC has the same upscale, tech-focused cabin but adds all-wheel drive for extra traction in rain and snow.
What changed, by category
Safety
Blind Spot Assist with Exit Warning Assist became standard on both A 220 models. It alerts the driver to vehicles in a blind spot and can warn occupants about approaching traffic when they start to open a door.
2021 Mercedes-Benz A-Class specs and features by trim
| Feature | ||
|---|---|---|
| Engine | 4-Cyl, Turbo, 2.0 Liter | 4-Cyl, Turbo, 2.0 Liter |
| Transmission | Automatic, 7-Spd w/7G-DCT | Automatic, 7-Spd w/7G-DCT |
| Drivetrain | FWD | AWD |
| Fuel Type | Gas | Gas |
| MPG City | 25 mpg | 25 mpg |
| MPG Highway | 36 mpg | 34 mpg |
| Horsepower | 188 hp | 188 hp |
| Torque | 221 lb-ft | 221 lb-ft |
| Trunk/Cargo | 8.6 cu-ft | 8.6 cu-ft |
| Rear Legroom | 33.9 in | 33.9 in |
| Seats | 5 | 5 |
| Doors | 4 | 4 |
| Alarm System | ||
| Automatic Emergency Braking | ||
| Automatic High Beams | ||
| Blindspot Sensors | ||
| Lane Departure Warning | ||
| Park Assist | ||
| Rear View Camera | ||
| 360 Camera | ||
| Alloy Wheels | ||
| LED Headlights | ||
| Panorama Moon Roof | ||
| Rear Spoiler | ||
| Navigation System | ||
| Premium Audio | ||
| Smartphone Interface | ||
| Touch Screen Monitor | ||
| Dual-Zone Climate Control | ||
| Heated Front Seats | ||
| Heated Steering Wheel | ||
| Leather Seats | ||
| Proximity Keyless Entry | ||
| Push-Button Engine Start | ||
| Remote Start | ||
| Ventilated Front Seats | ||
Frequently asked questions
What is the biggest change to the 2021 Mercedes-Benz A-Class?
The biggest change is standard blind-spot monitoring with exit warning across the 2021 A-Class lineup. Most other parts of the sedan carry over from 2020.
Was the 2021 Mercedes-Benz A-Class redesigned?
No, the 2021 Mercedes-Benz A-Class was not redesigned. It remains part of the first US-market A-Class sedan generation introduced for 2019, with no major styling, platform, or cabin overhaul for 2021.
Does every 2021 Mercedes-Benz A-Class have blind-spot monitoring?
Yes, blind-spot monitoring with exit warning is standard on both the 2021 A 220 and A 220 4MATIC. The exit-warning function can alert occupants to approaching traffic as they begin opening a door.
Did the 2021 Mercedes-Benz A-Class get a new engine?
No, the 2021 A-Class kept its 188-horsepower 2.0-liter turbocharged four-cylinder engine and seven-speed dual-clutch automatic transmission. The A 220 remained front-wheel drive, while the A 220 4MATIC retained all-wheel drive.
Is the 2021 Mercedes-Benz A-Class substantially different from the 2020 model?
No, the 2021 A-Class is not substantially different from the 2020 model. Its main advantage is that blind-spot monitoring with exit warning became standard; the basic powertrain, styling, cabin technology, and structure otherwise carried over.
2021 Mercedes-Benz A-Class Reviews
What owners are saying about the 2021 Mercedes-Benz A-Class.
4.3
2021 Mercedes-Benz A-Class
(168 reviews)
“The car is spritely and a joy to drive. If you try and drive like your grandmother you can feel it get mad at you. Plus the interior feels like a nightclub in the dark!”
“A Basic Mercedes that provides the same superior comfort and mobility synonymous with Mercedes Brand while being in the decent price range.”