2021 Mercedes-Benz S-Class vs. 2021 BMW 7 Series
iSeeCars' unbiased and data-driven comparison of the 2021 Mercedes-Benz S-Class and 2021 BMW 7 Series contrasts the two cars across a broad spectrum of vehicle specifications to determine which car is better. In addition to comparing pricing and specs, iSeeCars uses all the ratings, rankings, and insights from its comprehensive analyses of each vehicle model, including calculations of reliability, safety, depreciation, value retention, and the vehicle's projected lifetime recalls (based on analyzing over 25 billion data points). This in-depth evaluation is used to identify which vehicle represents a better overall choice for shoppers who are considering both the 2021 Mercedes-Benz S-Class and the 2021 BMW 7 Series.
When we compare the 2021 Mercedes-Benz S-Class's and the 2021 BMW 7 Series's specifications and ratings, the 2021 Mercedes-Benz S-Class has the advantage in the areas of reliability, resale value, overall quality score and base engine power. The 2021 BMW 7 Series has the advantage in the areas of typical lower range of pricing for used cars, and fuel efficiency and interior volume. Based on this comparison of the 2021 Mercedes-Benz S-Class's and the 2021 BMW 7 Series's specifications and ratings, the 2021 Mercedes-Benz S-Class is a better car than the 2021 BMW 7 Series.
Pricing: A used 2021 Mercedes-Benz S-Class ranges from $74,369 to $122,397 while a used 2021 BMW 7 Series is priced between $40,971 to $74,400.
Resale/Retained Value: Looking at the 5-year depreciation rate for both models, the 2021 Mercedes-Benz S-Class loses 56.9 percent of its value and the 2021 BMW 7 Series loses 63.1 percent of its value. This means the 2021 Mercedes-Benz S-Class retains 6.2 percentage points more of its value and has the advantage of higher resale value versus the 2021 BMW 7 Series.
Quality Rating: The iSeeCars Overall Quality rating for the Mercedes-Benz S-Class is 7.5 out of 10 while the BMW 7 Series' quality rating is 7.2 out of 10. This results in the Mercedes-Benz S-Class being ranked 6 out of 24 Best Luxury Large Cars and the BMW 7 Series being ranked 14 out of 24.
Reliability Rating: iSeeCars’ Reliability Rating for the Mercedes-Benz S-Class is 8.1 out of 10. For the BMW 7 Series the reliability rating is 7.9 out of 10. This gives the Mercedes-Benz S-Class a slight advantage in reliability compared to the BMW 7 Series.
Engine Power and Fuel Efficiency Comparison: For engine performance, the 2021 Mercedes-Benz S-Class’s base engine makes 429 horsepower, and the 2021 BMW 7 Series base engine makes 335 horsepower. The S-Class is rated to deliver an average of 24 miles per gallon, with a highway range of 644 miles. The 7 Series is rated to deliver an average of 25 miles per gallon, with a highway range of 597 miles.This gives the 2021 BMW 7 Series the advantage in fuel efficiency and the 2021 Mercedes-Benz S-Class the advantage in maximum range. Both models use premium unleaded.
Passenger Space Comparison: While both models are large cars, the 2021 BMW 7 Series has the advantage of offering more interior volume, reflected in more rear leg room and cargo space. The 2021 Mercedes-Benz S-Class has the advantage in the areas of front head room, front shoulder room, front leg room, rear head room and rear shoulder room.
New Car Pricing
Asking Price:
-
Starting MSRP:
$109,800
Category Avg Starting MSRP:
(Luxury Large Cars)
$98,231
Category Starting MSRP Range:
(Luxury Large Cars)
$69,200 - $140,000
New Car Pricing
Asking Price:
-
Starting MSRP:
$86,800
Category Avg Starting MSRP:
(Luxury Large Cars)
$98,231
Category Starting MSRP Range:
(Luxury Large Cars)
$69,200 - $140,000
Used Car Pricing
Avg Used Car Price:
$88,036
Price Range:
$74,369 - $122,397
Category Avg Price:
(Luxury Large Cars)
$68,785
Category Avg Price Range:
(Luxury Large Cars)
$49,186 - $100,629
# Used Cars for Sale Nationally:
171
Avg Mileage of Used Cars for Sale:
31,278
# Good or Great Deals:
85
Used Car Pricing
Avg Used Car Price:
$55,235
Price Range:
$40,971 - $74,400
Category Avg Price:
(Luxury Large Cars)
$68,785
Category Avg Price Range:
(Luxury Large Cars)
$49,186 - $100,629
# Used Cars for Sale Nationally:
83
Avg Mileage of Used Cars for Sale:
44,894
# Good or Great Deals:
34
Mercedes-Benz S-Class Scores & Rankings
Overall Score:
7.5 / 10
Reliability:
8.1 / 10
Retained Value:
7.0 / 10
Safety:
Not available
BMW 7 Series Scores & Rankings
Overall Score:
7.2 / 10
Reliability:
7.9 / 10
Retained Value:
6.6 / 10
Safety:
Not available
iSeeCars Reliability Insights for 2021 Mercedes-Benz S-Class
Remaining Life Expectancy (years):
7.1
Typical Category Remaining Life Expectancy:
(Luxury Large Cars)
7.5
Category Remaining Life Expectancy Range:
(Luxury Large Cars)
4.7 - 11.7
Chance of Reaching 200k Miles for a New Car:
1.4%
iSeeCars Reliability Insights for 2021 BMW 7 Series
Remaining Life Expectancy (years):
4.7
Typical Category Remaining Life Expectancy:
(Luxury Large Cars)
7.5
Category Remaining Life Expectancy Range:
(Luxury Large Cars)
4.7 - 11.7
Chance of Reaching 200k Miles for a New Car:
0.3%
Expected 30-year Lifetime Recalls
Expected Lifetime Recalls:
1.8
Typical Category Recalls:
(Luxury Large Cars)
5.4
Category Range for Recalls:
(Luxury Large Cars)
1 - 61.6
Expected 30-year Lifetime Recalls
Expected Lifetime Recalls:
36.2
Typical Category Recalls:
(Luxury Large Cars)
5.4
Category Range for Recalls:
(Luxury Large Cars)
1 - 61.6
Mercedes-Benz S-Class Rankings
Ranking
1 out of / 24Ranking
2 out of / 24Ranking
2 out of / 24Ranking
3 out of / 24Ranking
3 out of / 24Ranking
6 out of / 24Ranking
7 out of / 8Ranking
8 out of / 11Ranking
11 out of / 24BMW 7 Series Rankings
Ranking
4 out of / 24Ranking
4 out of / 7Ranking
5 out of / 8Ranking
6 out of / 24Ranking
6 out of / 11Ranking
7 out of / 24Ranking
8 out of / 24Ranking
8 out of / 24Ranking
14 out of / 24Ranking
23 out of / 24Available Body Styles
Convertible, Coupe, Sedan
Available Body Styles
Sedan
Available Drivetrain Options
Gasoline
Available Drivetrain Options
Gasoline, Plug-In Hybrid
2021 Mercedes-Benz S-Class Trim Levels
Not yet available
2021 BMW 7 Series Trim Levels
740i, 740i xDrive, 750i xDrive, ALPINA B7 xDrive, M760i xDrive
Warranty Information
Warranty, Bumper-to-Bumper:
4 years / 50000 miles
Warranty, Powertrain:
4 years / 50000 miles
Warranty, Roadside Assistance:
4 years / 50000 miles
Warranty Information
Warranty, Bumper-to-Bumper:
4 years / 50000 miles
Warranty, Powertrain:
4 years / 50000 miles
Warranty, Roadside Assistance:
4 years
Safety Ratings
NHTSA Safety Rating (last 5 year average):
Not yet available
2025 NHTSA Overall Rating:
Not yet available
2025 NHTSA Front Crash Overall Rating:
Not yet available
2025 NHTSA Side Crash Overall Rating:
Not yet available
2025 NHTSA Rollover Rating:
Not yet available
IIHS Safety Rating:
Not yet available
Safety Ratings
NHTSA Safety Rating (last 5 year average):
Not yet available
2025 NHTSA Overall Rating:
Not yet available
2025 NHTSA Front Crash Overall Rating:
Not yet available
2025 NHTSA Side Crash Overall Rating:
Not yet available
2025 NHTSA Rollover Rating:
Not yet available
IIHS Safety Rating:
Not yet available
Base Drivetrain Specs
Horsepower:
429 hp @ 6100 rpm
Torque:
384 foot-lbs @ 1800 rpm
Power-to-Weight Ratio (higher is better):
0.091 hp per pound
Base Drivetrain Specs
Horsepower:
335 hp @ 5500 rpm
Torque:
331 foot-lbs @ 1500 rpm
Power-to-Weight Ratio (higher is better):
0.079 hp per pound
Engine Specifications
Engine Size:
3 liters
Engine Configuration:
Inline
Number of Cylinders:
6
Transmission:
Automatic
Standard/Optional Drivetrain Type:
AWD
EPA Fuel Economy
(City/Highway/Combined MPG):
20 / 29 / 24
Range (city/hwy):
444 / 644 miles
Recommended Fuel Type:
Premium Unleaded
Engine Specifications
Engine Size:
3 liters
Engine Configuration:
Inline
Number of Cylinders:
6
Transmission:
Automatic
Standard/Optional Drivetrain Type:
RWD / AWD
EPA Fuel Economy
(City/Highway/Combined MPG):
22 / 29 / 25
Range (city/hwy):
453 / 597 miles
Recommended Fuel Type:
Premium Unleaded
Standard/Optional Features
Adaptive Cruise Control:
Standard
Air Suspension:
Standard
Alloy wheels:
Standard
Android Auto:
Standard
Apple CarPlay:
Standard
Automatic Parking:
Standard
Bench Seats:
Standard
Bluetooth:
Standard
Cooled/Ventilated Seats:
Standard
Heated Seats
Standard
Internet Radio:
Standard
Keyless Entry:
Standard
Keyless Ignition:
Standard
Leather Upholstery:
Standard
Massage Seats:
Standard
Navigation System:
Standard
Paddle Shifters:
Standard
Parking Sensors:
Standard
Power Lift Gate:
Standard
Power outlet:
Standard
Roadside assistance:
Standard
Satellite radio:
Standard
Sunroof/Moonroof:
Standard
Voice Recognition:
Standard
Wifi:
Standard
Wireless Smartphone Charging:
Standard
Heated Steering Wheel:
Available
Captain's seat:
N/A
Front Bench Seats:
N/A
Panoramic Sunroof/Moonroof
N/A
Quad Seats:
N/A
Roof Rack:
N/A
Trailer Hitch:
N/A
Standard/Optional Features
Adaptive Cruise Control:
Available
Air Suspension:
Standard
Alloy wheels:
Standard
Android Auto:
Available
Apple CarPlay:
Standard
Automatic Parking:
Standard
Bench Seats:
Standard
Bluetooth:
Standard
Cooled/Ventilated Seats:
Available
Heated Seats
Standard
Internet Radio:
Standard
Keyless Entry:
Standard
Keyless Ignition:
Standard
Leather Upholstery:
Standard
Massage Seats:
Available
Navigation System:
Standard
Paddle Shifters:
Standard
Parking Sensors:
Standard
Power Lift Gate:
Standard
Power outlet:
Standard
Roadside assistance:
Standard
Satellite radio:
Standard
Sunroof/Moonroof:
Standard
Voice Recognition:
Standard
Wifi:
Standard
Wireless Smartphone Charging:
Standard
Heated Steering Wheel:
Standard
Captain's seat:
N/A
Front Bench Seats:
N/A
Panoramic Sunroof/Moonroof
Available
Quad Seats:
Available
Roof Rack:
N/A
Trailer Hitch:
N/A
Safety Features
360-Degree Camera:
Standard
Blind Spot Monitoring:
Standard
Driver Attention Monitoring:
Standard
Forward Collision Warning:
Standard
Lane Departure Warning:
Standard
Lane Keeping Assist:
Standard
Pedestrian Detection:
Standard
Rear Cross-Traffic Alert:
Standard
Backup camera:
Available
Rear Seat Reminder:
N/A
Safety Features
360-Degree Camera:
Standard
Blind Spot Monitoring:
Standard
Driver Attention Monitoring:
Standard
Forward Collision Warning:
Standard
Lane Departure Warning:
Standard
Lane Keeping Assist:
Available
Pedestrian Detection:
Standard
Rear Cross-Traffic Alert:
N/A
Backup camera:
N/A
Rear Seat Reminder:
N/A
Interior Dimensions
Front Head Room:
42.1 inches
Front Leg Room:
41.7 inches
Front Shoulder Room:
59.6 inches
Rear Head Room:
39.4 inches
Rear Leg Room:
43.8 inches
Rear Shoulder Room:
59 inches
Cargo Space:
12.9 cubic feet
Overall Interior Volume:
112.0 cubic feet
Interior Dimensions
Front Head Room:
39.9 inches
Front Leg Room:
41.4 inches
Front Shoulder Room:
59.2 inches
Rear Head Room:
38.9 inches
Rear Leg Room:
44.4 inches
Rear Shoulder Room:
57.7 inches
Cargo Space:
18.2 cubic feet
Overall Interior Volume:
114.0 cubic feet
Exterior Dimensions
Curb Weight:
4740 lbs
Width:
83 inches
Height:
59.2 inches
Length:
208.2 inches
Wheelbase:
126.6 inches
Ground Clearance:
5.1 inches
Exterior Dimensions
Curb Weight:
4244 lbs
Width:
85.4 inches
Height:
58.2 inches
Length:
207.4 inches
Wheelbase:
126.4 inches
Ground Clearance:
5.3 inches
Standard Wheel/Tire Information
Wheel Size:
19.0 x 8.5 inches
Wheel Type:
aluminum alloy
Tire Size:
255/45R19
Standard Wheel/Tire Information
Wheel Size:
18.0 x 8.0 inches
Wheel Type:
aluminum alloy
Tire Size:
245/50R18
Exterior Colors
Black
Black / Obsidian Black Metallic / Onyx Black Metallic
Blue
Anthracite Blue Metallic
Gray
Graphite Grey Metallic / Selenite Grey Metallic
Green
Emerald Green Metallic
Red
Rubellite Red Metallic
Silver
Cirrus Silver Metallic / Mojave Silver Metallic
White
designo Diamond White Metallic
Exterior Colors
Black
Black Sapphire Metallic / Carbon Black Metallic / Jet Black
Blue
Phytonic Blue Metallic / Tanzanite Blue II Metallic
Gray
Bernina Grey Amber Effect / Dark Graphite Metallic / Donington Grey Metallic / Dravit Grey Metallic / Frozen Bluestone Metallic
Green
Not available
Red
Aventurin Red Metallic
Silver
Cashmere Silver Metallic
White
Alpine White / Mineral White Metallic
Interior Colors
Beige
Macchiato Beige/Magma Grey
Black
Black
Brown
Sienna Brown/Black
Red
Carmine Red/Black
Silver
Silver Grey/Black
White
Not available
Interior Colors
Beige
Canberra Beige / Zagora Beige
Black
Black
Brown
Amarone Brown/Black / Cognac / Mocha / Tartufo
Red
Fiona Red/Black
Silver
Not available
White
Ivory White/Black / Smoke White/Black / Smoke White/Night Blue
