2020 BMW 3 Series vs 2021 Mazda MAZDA3
Overview | |
MSRP$40,750 | MSRP$20,650 |
Listings217 | Listings48 |
Ratings & Reviews | |
User Reviews | User Reviews |
Expert reviews8.2 out of 10 | Expert reviews8.3 out of 10 |
Pros
Cons
| Pros
Cons
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2020 BMW 3 Series Reviews SummaryDoes BMW still use “The Ultimate Driving Machine” as its advertising tagline? Yes, it does. And with the arrival of the 2020 BMW M340i, which slots between the existing 330i and the forthcoming M3, the company proves there is substance behind the slogan. | |
2021 Mazda MAZDA3 Reviews SummaryMazdas are fun. All of them. Even the SUVs. But until recently, they weren’t particularly fast. The joy in driving a Mazda derived from the expertly tuned ride and handling qualities that made piloting the automaker’s products a sheer delight. And then Mazda started turbocharging cars and SUVs equipped with its 2.5-liter 4-cylinder engine. Now, the 2021 Mazda3 2.5 Turbo arrives, one of the last members of Mazda’s fleet to add forced induction for boosted power and performance. The result, as you might guess, is absolutely delightful. | |
Popular Features & Specs | |
Engine2.0L 255 hp I4 | Engine2.0L 155 hp I4 |
Drive TrainRWD | Drive TrainFWD |
Seating Capacity5 | Seating Capacity5 |
Horsepower255 hp @ 5000 rpm | Horsepower |
MPG City26 | MPG City28 |
MPG Highway36 | MPG Highway36 |
Engine | |
Engine Name2.0L 255 hp I4 | Engine Name2.0L 155 hp I4 |
Torque295 lb-ft @ 1450 rpm | Torque |
Horsepower255 hp @ 5000 rpm | Horsepower |
DrivetrainRWD | DrivetrainFWD |
Fuel Economy | |
MPG City26 | MPG City28 |
MPG Highway36 | MPG Highway36 |
Interior | |
Seating Capacity5 | Seating Capacity5 |
Key Features | |
Navigation SystemStandard | Navigation System |
Sunroof/MoonroofStandard | Sunroof/Moonroof |
Safety | |
Front Crash Overall | Front Crash Overall5 |
Side Crash Overall | Side Crash Overall5 |
Dimensions & Capacity | |
Cargo Space13.0 cu ft | Cargo Space13.2 cu ft |
Curb Weight3589 lbs | Curb Weight3100 lbs |
Height56.8 in | Height56.9 in |
Length185.7 in | Length183.5 in |
Width81.4 in | Width70.7 in |
Wheelbase112.2 in | Wheelbase107.3 in |
Maximum Payload | Maximum Payload923 lbs |
Number of doors4 | Number of doors4 |
Overview | ||
MSRP | $40,750 | $20,650 |
Listings | ||
Ratings & Reviews | ||
User reviews | ||
Expert reviews | 8.2 out of 10Read full review | 8.3 out of 10Read full review |
Pros & cons | Pros
Cons
| Pros
Cons
|
Summary | Does BMW still use “The Ultimate Driving Machine” as its advertising tagline? Yes, it does. And with the arrival of the 2020 BMW M340i, which slots between the existing 330i and the forthcoming M3, the company proves there is substance behind the slogan. | Mazdas are fun. All of them. Even the SUVs. But until recently, they weren’t particularly fast. The joy in driving a Mazda derived from the expertly tuned ride and handling qualities that made piloting the automaker’s products a sheer delight. And then Mazda started turbocharging cars and SUVs equipped with its 2.5-liter 4-cylinder engine. Now, the 2021 Mazda3 2.5 Turbo arrives, one of the last members of Mazda’s fleet to add forced induction for boosted power and performance. The result, as you might guess, is absolutely delightful. |
Video | ||
Popular Features & Specs | ||
Engine | 2.0L 255 hp I4 | 2.0L 155 hp I4 |
Drive Train | RWD | FWD |
Seating Capacity | 5 | 5 |
Horsepower | 255 hp @ 5000 rpm | |
MPG City | 26 | 28 |
MPG Highway | 36 | 36 |
Engine | ||
Engine Name | 2.0L 255 hp I4 | 2.0L 155 hp I4 |
Torque | 295 lb-ft @ 1450 rpm | |
Horsepower | 255 hp @ 5000 rpm | |
Drivetrain | RWD | FWD |
Fuel Economy | ||
MPG City | 26 | 28 |
MPG Highway | 36 | 36 |
Interior | ||
Seating Capacity | 5 | 5 |
Key Features | ||
Navigation System | Standard | |
Sunroof/Moonroof | Standard | |
Safety | ||
Front Crash Overall | 5 | |
Side Crash Overall | 5 | |
Dimensions & Capacity | ||
Cargo Space | 13.0 cu ft | 13.2 cu ft |
Curb Weight | 3589 lbs | 3100 lbs |
Height | 56.8 in | 56.9 in |
Length | 185.7 in | 183.5 in |
Width | 81.4 in | 70.7 in |
Wheelbase | 112.2 in | 107.3 in |
Maximum Payload | 923 lbs | |
Number of doors | 4 | 4 |
The 2020 BMW 3 Series evoked a sense of awe similar to the majestic humpback whales the reviewer encountered during his time as a deckhand. The car's design, with its lidded headlights, bulging curved hood, wide lower air intakes, and oversize grille, gave it an aquatic appearance. Despite its high price, starting at $40,750 and rising to $56,000 for the M340i with xDrive, the 3 Series was praised for its driving experience, especially the M340i trim. The interior, featuring off-white Ivory leather and Tanzanite Blue exterior paint, was noted for its quality and personalization options.
In contrast, the 2021 Mazda MAZDA3, which won the World Car Design of the Year for 2020, was lauded for its dramatic and sophisticated bodywork. The sedan version, tested in Premium Plus trim with extra-cost Machine Gray Metallic paint, was priced at $33,890. The interior, lined with white Nappa leather, exuded a premium feel, although it lacked some features like rear-seat air conditioning vents and USB charging ports. The Mazda3's design focused on the driver, with a high-contrast two-tone interior and attention to detail, making it a legitimate entry-luxury car.















The 2020 BMW 3 Series addressed previous criticisms of its driving dynamics with significant structural and suspension changes. The M340i trim, with its turbocharged 3.0-liter inline 6-cylinder engine producing 382 horsepower and 369 pound-feet of torque, offered a thrilling driving experience. The car's variable sport steering, rear M Sport differential, and M Sport brakes contributed to its handling prowess. Despite the standard 8-speed automatic transmission, the M340i xDrive's performance, including a 0-60 mph time of 4.1 seconds, was impressive, making it a joy to drive even in daily conditions.
The 2021 Mazda MAZDA3 Turbo, with its turbocharged 2.5-liter four-cylinder engine, delivered 250 horsepower and 320 pound-feet of torque on 93-octane fuel. The car's six-speed automatic transmission, paired with the i-Activ AWD system, provided smooth and predictable performance. The Mazda3 Turbo's Sport mode enhanced driving dynamics, while the G-Vectoring Control Plus software improved cornering. Despite its torsion beam rear axle suspension, the car's handling was finely tuned for maximum driving pleasure. However, the test drive resulted in an average of 20.4 mpg, falling short of the EPA estimate of 27 mpg.
The 2020 BMW 3 Series offered simple and supportive front seats, equipped with high-quality leather, heaters, and a heated steering wheel. Rear-seat entry and exit were awkward, but once inside, the seats provided excellent support. The car's controls were somewhat cryptic, but the widescreen infotainment system and iDrive were well-integrated. Storage space was generous, with a trunk capacity of 17 cubic feet, although it appeared narrow.
The 2021 Mazda MAZDA3 2.5 Turbo featured Nappa leather seats and a heated steering wheel, but lacked front seat ventilation and rear-seat amenities like air conditioning vents and USB ports. In-cabin storage was adequate, but the optional wireless smartphone charger reduced center console bin capacity. The sedan's trunk space measured 13.2 cubic feet, while the hatchback version offered more utility with 20.1 cubic feet behind the rear seat and 47.1 cubic feet with it folded down.
The 2020 BMW 3 Series' iDrive infotainment system had evolved significantly, featuring a touchscreen display, natural voice recognition, and gesture control. The system was user-friendly, with intuitive menu pathways and an excellent voice recognition system. The head-up display was visible even with polarized sunglasses, enhancing the driving experience.
The 2021 Mazda MAZDA3's Mazda Connect infotainment system included an 8.8-inch display, Apple CarPlay, Android Auto, and a three-year trial subscription to Mazda Connected Services. However, the lack of a touchscreen and poor voice-recognition technology were major drawbacks. The system was paired with a 12-speaker Bose premium sound system, which performed well with high-quality audio files. The head-up display was useful, showing speed, speed limits, and safety technology status.
The 2020 BMW 3 Series required two Driving Assistance option packages for full ADAS features. While the systems were accurate, they lacked smoothness. The lane-keeping assist system was abrupt, reminding drivers to stay engaged. The car earned a Top Safety Pick+ rating from the IIHS when equipped with adaptive full LED headlights.
The 2021 Mazda MAZDA3's i-ActiveSense ADAS aimed to support rather than replace the driver. The system included adaptive cruise control with stop-and-go capability, adaptive front lighting, and exclusive features like low-speed reverse automatic braking and Traffic Jam Assist. The ADAS operated smoothly, encouraging use. The Mazda3 earned top five-star ratings in NHTSA testing, although the IIHS had not yet carried over its Top Safety Pick+ rating from 2020.
CarGurus highlights

According to CarGurus experts, the overall rating for the 2020 BMW 3 Series is 8.2 out of 10, while the 2021 Mazda MAZDA3 scores 8.3 out of 10. Based on these ratings, the 2021 Mazda MAZDA3 is the recommended choice, offering a better balance of design, performance, and value.
Choose the 2020 BMW 3 Series if:
- You prioritize a thrilling driving experience with superior handling and performance.
- You appreciate a high-quality, customizable interior with advanced technology.
- You value a car with a strong safety rating and comprehensive ADAS features.
Choose the 2021 Mazda MAZDA3 if:
- You seek a stylish, award-winning design with a premium feel at a lower price point.
- You want a car with smooth and predictable performance, especially in the Turbo trim.
- You prefer a vehicle with a driver-focused interior and excellent safety ratings.
CarGurus highlights

According to CarGurus experts, the overall rating for the 2020 BMW 3 Series is 8.2 out of 10, while the 2021 Mazda MAZDA3 scores 8.3 out of 10. Based on these ratings, the 2021 Mazda MAZDA3 is the recommended choice, offering a better balance of design, performance, and value.
Choose the 2020 BMW 3 Series if:
Shop Now- You prioritize a thrilling driving experience with superior handling and performance.
- You appreciate a high-quality, customizable interior with advanced technology.
- You value a car with a strong safety rating and comprehensive ADAS features.
Choose the 2021 Mazda MAZDA3 if:
Shop Now- You seek a stylish, award-winning design with a premium feel at a lower price point.
- You want a car with smooth and predictable performance, especially in the Turbo trim.
- You prefer a vehicle with a driver-focused interior and excellent safety ratings.

By: CarGurus + AI
At CarGurus, our team of experienced automotive writers remain at the heart of our content operation, conducting hands-on car tests and writing insightful guides that are backed by years of industry experience. To complement this, we are harnessing AI to make our content offering more diverse and more helpful to shoppers than ever. To achieve this, our AI systems are based exclusively on CarGurus content, ratings and data, so that what we produce is both unique to CarGurus, and uniquely helpful to car shoppers.







































