2021 Mercedes-Benz S-Class vs 2020 Toyota Prius
Overview | |
MSRP$24,325 | MSRP$109,800 |
Listings132 | Listings202 |
Ratings & Reviews | |
User Reviews | User Reviews |
Expert reviews7.5 out of 10 | Expert reviews7.5 out of 10 |
Pros
Cons
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Cons
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2020 Toyota Prius Reviews SummaryEver heard of an eponym? It’s a brand or product that is so popular that it’s come to define its respective market. Think of Kleenex for tissues or Band-Aid for medical bandages. For hybrids, the Toyota Prius has ascended to near-eponym status. It was one of the first—and remains one of the most popular—hybrids ever made. As automakers across the industry are rolling out more hybrid models, the Prius continues to be the standard-bearer of this genre. This is largely due to the fact that the Prius is a dedicated hybrid, rather than a hybrid variant of an existing model. Throughout the industry, different companies are taking different approaches to alt-fuel vehicles, including full-electric and hydrogen fuel cell powertrains. The Prius endures as the leader in hybrid power due to a focus on fuel efficiency that doesn’t compromise on style, drivability, and versatility. So how does the Prius hold its ground as more players enter the fray? Read on to find out. | |
2021 Mercedes-Benz S-Class Reviews SummaryThe S-Class not only sits at the top of the Mercedes hierarchy in price and prestige, but it has also long served as a technological showcase. In the press release for the redesigned 2021 S-Class, Mercedes repeatedly noted the innovations—from anti-lock brakes to airbags—that were introduced on the big sedan and eventually trickled down to mainstream vehicles. With the previous generation dating back to the 2014 model year (with a significant update for 2018), the Mercedes-Benz S-Class was in need of an update to maintain that status, and to keep pace with other full-size luxury sedans like the Audi A8, BMW 7 Series, and Lexus LS. To do that, the new S-Class gets a more sophisticated infotainment system, new powertrains, and more aerodynamic bodywork, among other features. The 2021 S-Class launches in two configurations, both with 4Matic all-wheel drive (AWD) and EQ Boost mild-hybrid systems. The S500 4Matic has a six-cylinder engine, while the S580 4Matic has a V8. We spent a few days with the Mercedes-Benz S580 for this review. A Mercedes-Maybach S680 4Matic version will follow in the first half of 2022, and you can expect a new AMG performance version sometime in the future as well. | |
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Popular Features & Specs | |
Engine1.8L 121 hp I4 Hybrid | Engine3.0L 429 hp I6 |
Drive TrainFWD | Drive TrainAWD |
Seating Capacity5 | Seating Capacity5 |
Horsepower | Horsepower429 hp @ 6100 rpm |
EV Battery Capacity0.7 kWh | EV Battery Capacity |
MPG City58 | MPG City20 |
MPG Highway53 | MPG Highway29 |
Engine | |
Engine Name1.8L 121 hp I4 Hybrid | Engine Name3.0L 429 hp I6 |
Torque | Torque384 lb-ft @ 1800 rpm |
Horsepower | Horsepower429 hp @ 6100 rpm |
DrivetrainFWD | DrivetrainAWD |
Fuel Economy | |
EV Battery Capacity0.7 kWh | EV Battery Capacity |
MPG City58 | MPG City20 |
MPG Highway53 | MPG Highway29 |
Interior | |
Leather Seats | Leather SeatsOptional |
Seating Capacity5 | Seating Capacity5 |
Key Features | |
Navigation System | Navigation SystemOptional |
Sunroof/Moonroof | Sunroof/MoonroofOptional |
Safety | |
Front Crash Overall4 | Front Crash Overall |
Side Crash Overall5 | Side Crash Overall |
Dimensions & Capacity | |
Cargo Space27.4 cu ft | Cargo Space12.9 cu ft |
Curb Weight3010 lbs | Curb Weight4740 lbs |
Height57.9 in | Height59.2 in |
Length180.0 in | Length208.2 in |
Width69.3 in | Width83.0 in |
Wheelbase106.3 in | Wheelbase126.6 in |
Maximum Payload825 lbs | Maximum Payload |
Number of doors4 | Number of doors4 |
Overview | ||
MSRP | $24,325 | $109,800 |
Listings | ||
Ratings & Reviews | ||
User reviews | ||
Expert reviews | 7.5 out of 10Read full review | 7.5 out of 10Read full review |
Pros & cons | Pros
Cons
| Pros
Cons
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Summary | Ever heard of an eponym? It’s a brand or product that is so popular that it’s come to define its respective market. Think of Kleenex for tissues or Band-Aid for medical bandages. For hybrids, the Toyota Prius has ascended to near-eponym status. It was one of the first—and remains one of the most popular—hybrids ever made. As automakers across the industry are rolling out more hybrid models, the Prius continues to be the standard-bearer of this genre. This is largely due to the fact that the Prius is a dedicated hybrid, rather than a hybrid variant of an existing model. Throughout the industry, different companies are taking different approaches to alt-fuel vehicles, including full-electric and hydrogen fuel cell powertrains. The Prius endures as the leader in hybrid power due to a focus on fuel efficiency that doesn’t compromise on style, drivability, and versatility. So how does the Prius hold its ground as more players enter the fray? Read on to find out. | The S-Class not only sits at the top of the Mercedes hierarchy in price and prestige, but it has also long served as a technological showcase. In the press release for the redesigned 2021 S-Class, Mercedes repeatedly noted the innovations—from anti-lock brakes to airbags—that were introduced on the big sedan and eventually trickled down to mainstream vehicles. With the previous generation dating back to the 2014 model year (with a significant update for 2018), the Mercedes-Benz S-Class was in need of an update to maintain that status, and to keep pace with other full-size luxury sedans like the Audi A8, BMW 7 Series, and Lexus LS. To do that, the new S-Class gets a more sophisticated infotainment system, new powertrains, and more aerodynamic bodywork, among other features. The 2021 S-Class launches in two configurations, both with 4Matic all-wheel drive (AWD) and EQ Boost mild-hybrid systems. The S500 4Matic has a six-cylinder engine, while the S580 4Matic has a V8. We spent a few days with the Mercedes-Benz S580 for this review. A Mercedes-Maybach S680 4Matic version will follow in the first half of 2022, and you can expect a new AMG performance version sometime in the future as well. |
Video | No video found | |
Popular Features & Specs | ||
Engine | 1.8L 121 hp I4 Hybrid | 3.0L 429 hp I6 |
Drive Train | FWD | AWD |
Seating Capacity | 5 | 5 |
Horsepower | 429 hp @ 6100 rpm | |
EV Battery Capacity | 0.7 kWh | |
MPG City | 58 | 20 |
MPG Highway | 53 | 29 |
Engine | ||
Engine Name | 1.8L 121 hp I4 Hybrid | 3.0L 429 hp I6 |
Torque | 384 lb-ft @ 1800 rpm | |
Horsepower | 429 hp @ 6100 rpm | |
Drivetrain | FWD | AWD |
Fuel Economy | ||
EV Battery Capacity | 0.7 kWh | |
MPG City | 58 | 20 |
MPG Highway | 53 | 29 |
Interior | ||
Leather Seats | Optional | |
Seating Capacity | 5 | 5 |
Key Features | ||
Navigation System | Optional | |
Sunroof/Moonroof | Optional | |
Safety | ||
Front Crash Overall | 4 | |
Side Crash Overall | 5 | |
Dimensions & Capacity | ||
Cargo Space | 27.4 cu ft | 12.9 cu ft |
Curb Weight | 3010 lbs | 4740 lbs |
Height | 57.9 in | 59.2 in |
Length | 180.0 in | 208.2 in |
Width | 69.3 in | 83.0 in |
Wheelbase | 106.3 in | 126.6 in |
Maximum Payload | 825 lbs | |
Number of doors | 4 | 4 |
The 2020 Toyota Prius maintained its iconic aerodynamic shape, a design choice driven by its optimal drag coefficient. Over the years, Toyota subtly evolved the Prius's styling to give it a more sedan-like appearance while retaining its hatchback functionality. The Prius's futuristic design, particularly its cabin with centrally located instrumentation, continued to stand out even as other manufacturers adopted similar design cues. The Prius offered four trim levels: L Eco, LE, XLE, and Limited, each adding more features and luxury as you moved up the range.
In contrast, the 2021 Mercedes-Benz S-Class, while not drastically different in appearance from its predecessor, boasted a drag coefficient of 0.22, surpassing even the Prius. The S-Class was slightly larger in all dimensions, with a classic Mercedes aesthetic highlighted by its hood ornament and grille. The interior was designed around a prominent infotainment touchscreen and digital instrument cluster, with a minimalist approach that included ambient lighting with 250 LED elements. The S-Class offered luxurious materials and features, such as Nappa leather upholstery and a two-panel glass roof, though some design choices like the piano-black trim were less practical.
















The 2020 Toyota Prius featured a 1.8-liter four-cylinder engine paired with an electric motor, producing a combined 121 horsepower. It offered both front-wheel drive and an all-wheel-drive variant, the latter using a second electric motor for the rear wheels. The Prius provided smooth acceleration and seamless transitions between electric and conventional power. It included three drive modes—EV, Eco, and Power—each catering to different driving preferences. The unique shifter design and engine braking mode added to its distinctive driving experience, while its low center of gravity contributed to surprisingly sharp handling for a hybrid.
The 2021 Mercedes-Benz S-Class offered two engine options: a 3.0-liter turbocharged inline-six in the S500 4Matic, producing 429 horsepower, and a 4.0-liter twin-turbo V8 in the S580 4Matic, delivering 496 horsepower. Both engines featured EQ Boost, a mild-hybrid system that provided additional power and efficiency. The S-Class achieved impressive acceleration, with 0-60 mph times of 4.8 seconds for the S500 and 4.4 seconds for the S580. It came with standard air suspension and optional E-Active Body Control, as well as rear-wheel steering for improved maneuverability. The S-Class excelled in comfort and handling, maintaining composure on twisty roads and offering precise steering.
The 2020 Toyota Prius made efficient use of its compact platform, offering spacious and comfortable front seats with ample headroom and legroom. The rear seats were also roomy, though taller passengers needed to be cautious when entering. The Prius provided 50.7 cubic feet of cargo space with the rear seats folded, and between 24.6 and 27.4 cubic feet with the seats up, depending on the model. Its hatchback design facilitated easy loading of large items, making it a versatile choice among hybrids.
The 2021 Mercedes-Benz S-Class improved on its predecessor with more headroom and rear legroom, though it offered less front legroom compared to competitors. It featured segment-leading shoulder room, enhancing the sense of spaciousness. The trunk space increased to 12.9 cubic feet, though it remained smaller than some rivals. The S-Class's front seats were highly adjustable and comfortable, with features like heating, ventilation, and massage. The interior design freed up storage space, and the optional Executive Line package transformed the rear seats into a luxurious experience, ideal for chauffeur-driven passengers.
The 2020 Toyota Prius came standard with a 7-inch touchscreen infotainment system, offering Android Auto, Apple CarPlay, Bluetooth connectivity, and a WiFi hotspot. The Limited trim upgraded to an 11.6-inch screen with a customizable layout, though it lacked Android Auto. The Prius's top-center instrument panel provided essential hybrid drivetrain information, and an available head-up display enhanced driver convenience.
The 2021 Mercedes-Benz S-Class featured a 12.3-inch digital instrument cluster and a 12.8-inch OLED central touchscreen, with wireless Apple CarPlay and Android Auto. The MBUX infotainment system offered increased computing power and relied heavily on the touchscreen. The S-Class included an augmented-reality head-up display and a 30-speaker Burmester audio system. While some tech features were well-executed, others, like the steering-wheel touchpads, were less intuitive. The S-Class also introduced personal profiles with biometric access and rear-seat infotainment options.
The 2020 Toyota Prius was equipped with Toyota Safety Sense 2.0, featuring automatic emergency braking, forward-collision warning, lane-departure warning, adaptive cruise control, and automatic high beams. Optional features included blind-spot monitoring and rear cross-traffic alert. The Prius earned a five-star NHTSA rating and a "Top Safety Pick" from the IIHS, though it fell short of the highest rating due to certain test scores.
The 2021 Mercedes-Benz S-Class included a comprehensive suite of safety features, such as adaptive cruise control, automated lane centering, and a 360-degree camera system. It introduced a rear-passenger airbag and improved existing features like traffic-sign recognition and lane-keep assist. While crash-test ratings were unavailable, the S-Class's driver-assist systems performed exceptionally well, handling highway curves and traffic changes smoothly.
CarGurus highlights

According to CarGurus experts, the overall rating for the 2020 Toyota Prius is 7.5 out of 10, while the 2021 Mercedes-Benz S-Class scores 7.5 out of 10. Both vehicles offer unique strengths, but the S-Class's blend of luxury, performance, and advanced technology makes it the more compelling choice for those seeking a premium driving experience.
Choose the 2021 Mercedes-Benz S-Class if:
- You desire a luxurious and technologically advanced interior.
- You seek powerful performance with a smooth and comfortable ride.
- You appreciate cutting-edge driver-assist features and safety innovations.
Choose the 2020 Toyota Prius if:
- You prioritize fuel efficiency and eco-friendly driving.
- You need a versatile vehicle with ample cargo space.
- You value a comprehensive suite of standard safety features.
CarGurus highlights

According to CarGurus experts, the overall rating for the 2020 Toyota Prius is 7.5 out of 10, while the 2021 Mercedes-Benz S-Class scores 7.5 out of 10. Both vehicles offer unique strengths, but the S-Class's blend of luxury, performance, and advanced technology makes it the more compelling choice for those seeking a premium driving experience.
Choose the 2021 Mercedes-Benz S-Class if:
Shop Now- You desire a luxurious and technologically advanced interior.
- You seek powerful performance with a smooth and comfortable ride.
- You appreciate cutting-edge driver-assist features and safety innovations.
Choose the 2020 Toyota Prius if:
Shop Now- You prioritize fuel efficiency and eco-friendly driving.
- You need a versatile vehicle with ample cargo space.
- You value a comprehensive suite of standard safety features.

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.








































