2027 BMW 7 SERIES VS 2027 MERCEDES-BENZ S-CLASS: FULL COMPARISON.
The 2027 BMW 7 Series pairs a 394 hp inline-six with BMW Operating System X and BMW Panoramic iDrive. The Mercedes-Benz S-Class counters with up to 530 hp and the MBUX interface across its model range. This page breaks down the key differences and points you to current inventory at Grayson BMW.
THE SHORT ANSWER.
Choose the BMW 7 Series if you prioritize BMW Operating System X, BMW Panoramic iDrive, the full-width BMW Panoramic Vision display, and the standard 14.6-inch BMW Passenger Screen. Choose the Mercedes-Benz S-Class if you prioritize the higher-output S 580 powertrain and its 530 hp and 533 lb-ft of torque. For buyers in Knoxville and across Tennessee, the comparison comes down to differences in technology layout, drivetrain choices, power output, cargo capacity, and available personalization.
SPECS HEAD-TO-HEAD.
| Specification | BMW 7 Series (740 xDrive) | Mercedes-Benz S-Class (S 500 4MATIC) |
|---|---|---|
| Engine | 3.0L TwinPower Turbo inline-six, 48V mild-hybrid | 3.0L inline-six turbo, mild-hybrid |
| Horsepower | 394 hp | 442 hp |
| Torque | 398 lb-ft | 413 lb-ft |
| Transmission | 8-speed automatic | 9-speed automatic |
| Drivetrain | RWD (740) / AWD xDrive (740 xDrive) | AWD (4MATIC standard) |
| Fuel | Gasoline with 48V mild-hybrid | Gasoline with mild-hybrid |
| Length | 212.6 in | 209.5 in |
| Seating | 5 | 5 |
| Cargo | 19.1 cu ft | 12.5 cu ft |
| EPA Fuel Economy | 24 city / 31 hwy | 20-21 city / 28-31 hwy |
| Central Display | 17.9 in | 14.4 in |
| Passenger Display | 14.6 in (standard) | 12.3 in (standard) |
| Rear Entertainment | 31.3-in 8K Theatre Screen (available) | 13.1-in MBUX Rear Seat (available) |
Full 2027 BMW 7 Series specs and features
PERFORMANCE AND POWERTRAIN.
Both sedans use a turbocharged 3.0-liter inline-six with mild-hybrid assistance as their entry powertrain. The BMW 740 xDrive produces 394 hp and 398 lb-ft of torque through an 8-speed automatic, and the 740 xDrive completes the sprint to 60 mph in under five seconds. Standard rear-wheel steering is included, and the adaptive two-axle air suspension is fitted across the range.
The Mercedes-Benz S 500 4MATIC puts out 442 hp and 413 lb-ft through a 9-speed automatic, with 4MATIC all-wheel drive standard on every trim. The S 580 escalates to a twin-turbocharged 4.0L V8 producing 530 hp and 533 lb-ft, with a 3.9-second 0-60 mph time.
The BMW 7 Series offers rear-wheel drive as a starting configuration for drivers who want a more driver-focused balance, with xDrive all-wheel drive available. The S-Class routes power through 4MATIC on all trims. The BMW 740 xDrive is rated at 24 city and 31 hwy, while the S 500 4MATIC is at 20-21 city and 28-31 hwy.
INTERIOR, SPACE AND CARGO.
The BMW 7 Series is longer at 212.6 inches versus 209.5 inches for the S-Class and offers 19.1 cubic feet of cargo capacity versus 12.5 cubic feet. That is a 6.6-cubic-foot difference.
Both cabins offer extensive material and seating options. The BMW 7 Series offers standard Veganza upholstery with perforated and quilted seat surfaces, and available BMW Individual Merino Leather in multiple color combinations including Merino Leather with cashmere wool. Optional Executive Lounge rear seating reclines to a 43-degree torso angle with an integrated leg rest behind the front passenger.
The S-Class offers MANUFAKTUR Made to Measure with over 150 exterior paint colors and more than 400 interior color options. Active multicontour front seats with massage are standard on the S 500. Both vehicles offer rear massage seating through their respective option programs.
The BMW 7 Series seats five, as does the S-Class. Rear headroom and legroom figures for the BMW 7 Series were not provided in the verified specs. The S-Class rear legroom is 43.9 inches.
TECHNOLOGY AND SAFETY.
BMW 7 SERIES.
The 2027 BMW 7 Series brings together BMW Panoramic Vision, the 17.9-inch Central Display in free-cut design, the standard 14.6-inch BMW Passenger Screen, and the 3D Head-Up Display through BMW Panoramic iDrive and BMW Operating System X. All four displays are coordinated by a single software platform built on the Android Open Source Project, with over-the-air updates built in.
The BMW Intelligent Personal Assistant is enhanced with Amazon Alexa+ AI, enabling conversational, dialogue-based voice control across vehicle functions, media, and navigation. Up to seven driver profiles can be stored with full personalization. BMW Digital Key Plus uses ultra-wideband technology for smartphone and smartwatch access. Optional Automatic Door Technology opens and closes doors without touch. Embedded exterior cameras capture incident footage automatically.
The available BMW Theatre Screen measures 31.3 inches with 8K resolution and supports Zoom video calls via an integrated camera. The available Bowers and Wilkins Diamond Surround Sound System delivers up to 1,965 watts across 35 speakers with Dolby Atmos. BMW Touch Command 5.5-inch rear-door touchscreens control climate, infotainment, seat settings, and ambient lighting independently.
On safety, the BMW 7 Series includes Active Driving Assistant with Active Blind Spot Detection, Frontal Collision Warning with City Collision Mitigation, and Lane Departure Warning as standard. The Level 2 BMW Symbiotic Drive system uses eye tracking and steering behavior analysis to intervene when distraction or danger is detected. Standard Parking Assistant Plus handles semi-automated parking with a 360-degree surround view.
MERCEDES-BENZ S-CLASS.
The Mercedes-Benz S-Class runs the MBUX Superscreen setup: a 12.3-inch digital instrument cluster, 14.4-inch central touchscreen, and 12.3-inch passenger display. MB.OS powers the system with AI from both Google and Microsoft. The available BMW Theatre Screen measures 31.3 inches, while the available MBUX High-End Rear Seat Entertainment system measures 13.1 inches. DIGITAL LIGHT micro-LED headlamps with 25,000 pixels per headlamp are standard on the S-Class. MBUX Augmented Reality Head-Up Display is available in the Exclusive Package. The Burmester 3D Surround Sound System, standard on the S 500, outputs 710 watts through 15 speakers; Burmester 4D with Dolby Atmos is available.
MB.DRIVE ASSIST handles Level 2 driver assistance with steering and lane change support. AIRMATIC air suspension with Car-to-X cloud-connected damping is standard. Parking assist is available through MB.DRIVE PARKING ASSIST and MB.DRIVE PARKING ASSIST 360.
The BMW 7 Series offers the larger central and passenger displays in this comparison. The S-Class distinguishes itself with standard DIGITAL LIGHT headlamps.
BMW ConnectedDrive and Digital Key Plus features
VALUE AND OWNERSHIP.
Both vehicles include substantial standard technology and connectivity. The BMW 7 Series includes BMW Digital Premium connectivity with four years of service as standard, covering unlimited data for the Central Display, BMW Passenger Screen, and BMW Theatre Screen. Apple CarPlay and Android Auto are included wirelessly as standard.
The S-Class includes OTA updates via Mercedes-Benz INTELLIGENT CLOUD and twin wireless device chargers in the redesigned center console. The MANUFAKTUR customization program offers extensive factory personalization options.
The BMW 7 Series offers a rear-wheel drive starting configuration in the 740, with xDrive available. The S-Class requires 4MATIC all-wheel drive on every trim. Warranty and service terms for both brands should be confirmed with your local retailer, as these can change with model year.
WHICH ONE SHOULD YOU BUY.
CHOOSE THE BMW 7 SERIES 740 OR 740 xDrive IF YOU:
- Want BMW Operating System X and BMW Panoramic iDrive.
- Prioritize a driver-facing cockpit where every display is unified under one operating system.
- Need the larger cargo area at 19.1 cu ft versus 12.5 cu ft.
- Want a rear-wheel drive option as a starting point.
- Value a standard 14.6-inch front passenger display and available 31.3-inch 8K BMW Theatre Screen with Zoom capability.
- Prefer the BMW Intelligent Personal Assistant with Amazon Alexa+ AI and seven-profile personalization.
CHOOSE THE MERCEDES-BENZ S-CLASS IF YOU:
- Want the higher-output S 580 with 530 hp and 533 lb-ft.
- Value DIGITAL LIGHT micro-LED headlamps with 25,000 pixels per headlamp as a standard feature.
- Want extensive factory personalization through MANUFAKTUR Made to Measure.
- Prefer a PHEV option now with the S 580e rather than waiting for the BMW 750e xDrive arriving in Q1 2027.
- Prioritize 4MATIC all-wheel drive as standard across all configurations.
Both vehicles offer different strengths. The decision comes down to whether you prefer the BMW display and software architecture or the higher-output S-Class powertrain and MANUFAKTUR personalization options.
SEE THE BMW 7 SERIES AT GRAYSON BMW IN KNOXVILLE.
Grayson BMW serves buyers across Knoxville and throughout Tennessee. The BMW 7 Series is available now, with the 740 in rear-wheel drive and the 740 xDrive in all-wheel drive. View current inventory and connect with a product specialist to schedule a review of available BMW 7 Series models.
FREQUENTLY ASKED QUESTIONS.
DOES THE 2027 BMW 7 SERIES HAVE MORE CARGO SPACE THAN THE MERCEDES-BENZ S-CLASS?
Yes. The BMW 7 Series offers 19.1 cubic feet of cargo space behind the rear seats, compared to 12.5 cubic feet in the Mercedes-Benz S-Class, a difference of 6.6 cubic feet.
IS THE BMW 7 SERIES OR THE S-CLASS MORE POWERFUL?
The S-Class offers higher output at its upper model levels. The BMW 740 xDrive produces 394 hp and 398 lb-ft of torque. The S 500 produces 442 hp and 413 lb-ft, and the S 580 produces 530 hp and 533 lb-ft from its twin-turbocharged V8. The BMW 7 Series offers a PHEV variant, the 750e xDrive, arriving in Q1 2027.
WHAT IS BMW PANORAMIC iDRIVE AND HOW DOES IT COMPARE TO THE MBUX SUPERSCREEN?
BMW Panoramic iDrive is a unified display and operating system combining the full-width BMW Panoramic Vision at the windshield base, the 17.9-inch Central Display, the 14.6-inch BMW Passenger Screen, and the 3D Head-Up Display, all running BMW Operating System X. The MBUX Superscreen in the S-Class combines a 12.3-inch instrument cluster, a 14.4-inch central touchscreen, and a 12.3-inch passenger display running Mercedes-Benz MB.OS. The BMW 7 Series has a larger central display and a larger standard passenger display.
DOES THE BMW 7 SERIES HAVE REAR-SEAT ENTERTAINMENT?
Yes. The available 31.3-inch 8K BMW Theatre Screen is ceiling-mounted in the rear compartment and supports Zoom video calls via an integrated camera. The available Mercedes-Benz MBUX High-End Rear Seat Entertainment system measures 13.1 inches.
IS REAR-WHEEL DRIVE AVAILABLE ON THE 2027 BMW 7 SERIES BUT NOT THE S-CLASS?
Yes. The BMW 740 is offered in rear-wheel drive. The 740 xDrive adds all-wheel drive. The Mercedes-Benz S-Class comes standard with 4MATIC all-wheel drive across all trims.
WHAT VOICE ASSISTANT DOES THE 2027 BMW 7 SERIES USE?
The BMW 7 Series uses the BMW Intelligent Personal Assistant, enhanced with Amazon Alexa+ AI technology. It supports natural language commands for vehicle functions, navigation, media, and more. The S-Class uses the MBUX Virtual Assistant with generative AI from both Google and Microsoft.
WHERE CAN I SEE THE BMW 7 SERIES IN PERSON NEAR KNOXVILLE, TN?
Grayson BMW in Knoxville carries the BMW 7 Series. Browse inventory online to view available vehicles, or contact the dealership to schedule a test drive.