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BMW X3 VS Mercedes SL Class – Specs, Efficiency & Price Comparison

Which model is the better choice – the BMW X3 or the Mercedes SL Class? We compare performance (398 HP vs 816 HP), boot capacity (570 L vs 213 L), efficiency (0.90 L vs 7.90 L), and of course, the price (50900 £ vs 112700 £).
Find out now which car fits your needs better!

The BMW X3 (SUV) is powered by a Petrol MHEV, Diesel MHEV or Plugin Hybrid engine and comes with a Automatic transmission. In comparison, the Mercedes SL Class (Roadster) features a Petrol MHEV, Petrol or Plugin Hybrid engine and a Automatic gearbox.

When it comes to boot capacity, the BMW X3 offers 570 L, while the Mercedes SL Class provides 213 L – depending on what matters most to you. If you’re looking for more power, you’ll need to decide whether the 398 HP of the BMW X3 or the 816 HP of the Mercedes SL Class suits your needs better.

There are also differences in efficiency: 0.90 L vs 7.90 L. In terms of price, the BMW X3 starts at 50900 £, while the Mercedes SL Class is available from 112700 £.

Compare all the key specs now and find out which model fits your lifestyle best!

BMW X3

The BMW X3 stands out in the competitive SUV market with its refined blend of performance and luxury. Its interior boasts high-quality materials and a design focused on driver comfort and convenience. With a robust engine lineup, the vehicle offers a balanced driving experience that caters to both urban settings and off-road adventures.

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Mercedes SL Class

The Mercedes-Benz SL-Class embodies a perfect fusion of performance and luxury, offering a driving experience that is both exhilarating and refined. Its sleek and aerodynamic design ensures a commanding presence on the road, while the sumptuous interior provides unparalleled comfort and cutting-edge technology. With a heritage of engineering excellence, this model stands as a testament to Mercedes-Benz's commitment to innovation and craftsmanship.

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BMW X3
Mercedes SL Class
X3
SL Class

Costs and Consumption

Price
50900 - 72400 £
Price
112700 - 199300 £
Consumption L/100km
0.9 - 7.7 L
Consumption L/100km
7.9 - 13.1 L
Consumption kWh/100km
-
Consumption kWh/100km
-
Electric Range
90 km
Electric Range
12 km
Battery Capacity
19.70 kWh
Battery Capacity
-
co2
21 - 175 g/km
co2
180 - 298 g/km
Fuel tank capacity
50 - 65 L
Fuel tank capacity
70 L

Dimensions and Body

Body Type
SUV
Body Type
Roadster
Seats
5
Seats
4
Doors
5
Doors
2
Curb weight
1930 - 2140 kg
Curb weight
1810 - 2195 kg
Trunk capacity
460 - 570 L
Trunk capacity
110 - 213 L
Length
4755 mm
Length
4700 - 4705 mm
Width
1920 mm
Width
1915 mm
Height
1660 mm
Height
1354 - 1359 mm
Payload
570 kg
Payload
325 - 375 kg

Engine and Performance

Engine Type
Petrol MHEV, Diesel MHEV, Plugin Hybrid
Engine Type
Petrol MHEV, Petrol, Plugin Hybrid
Transmission
Automatic
Transmission
Automatic
Transmission Detail
Automatikgetriebe
Transmission Detail
Automatikgetriebe
Drive Type
All-Wheel Drive
Drive Type
Rear-Wheel Drive, All-Wheel Drive
Power HP
197 - 398 HP
Power HP
381 - 816 HP
Acceleration 0-100km/h
4.6 - 7.8 s
Acceleration 0-100km/h
2.9 - 4.9 s
Max Speed
215 - 250 km/h
Max Speed
275 - 317 km/h
Torque
330 - 670 Nm
Torque
480 - 1420 Nm
Number of Cylinders
4 - 6
Number of Cylinders
4 - 8
Power kW
145 - 293 kW
Power kW
280 - 600 kW
Engine capacity
1995 - 2998 cm3
Engine capacity
1991 - 3982 cm3

General

Model Year
2024 - 2025
Model Year
2024
CO2 Efficiency Class
F, E, B
CO2 Efficiency Class
G
Brand
BMW
Brand
Mercedes-Benz

BMW X3

Introducing the BMW X3: A Blend of Power and Innovation

The BMW X3 is a testament to the brand’s commitment to merging luxury with cutting-edge technology. This SUV not only offers impressive on-road performance but also showcases innovative features that cater to both petrolheads and eco-conscious drivers.

Powerful Performance Across the Range

The BMW X3 comes with various powertrain options to suit diverse driving preferences, ranging from efficient plug-in hybrids to powerful petrol and diesel mild-hybrids. With performance outputs ranging from 184 PS to an impressive 510 PS, the X3 proves its versatility on the road. Paired with BMW's renowned automatic transmission, each model offers a smooth and responsive driving experience complemented by the brand's xDrive all-wheel-drive system.

Leading-Edge Hybrid Technology

Among the X3's portfolio, the plug-in hybrid variants stand out with their optimal balance between efficiency and performance. These models boast electric-only ranges up to 90 km, ideal for urban driving with minimal emissions. Meanwhile, the mild-hybrid systems enhance efficiency by recuperating energy during deceleration and supporting the combustion engine, optimizing fuel consumption ranging from 0.9 L/100km to 10.8 L/100km depending on the model.

Contemporary Design with Practical Features

From a design perspective, the BMW X3 maintains its iconic SUV silhouette, characterized by robust proportions and sleek, aerodynamic lines. With dimensions of up to 4755 mm in length and a luggage capacity of up to 570 litres, it caters to both style enthusiasts and practical users. Additionally, the interior showcases BMW’s commitment to sophistication, featuring high-quality materials, state-of-the-art infotainment systems, and comprehensive driver-assistance technologies.

Efficiency Meets Performance

The X3's impressive performance figures are complemented by its responsible approach to CO2 emissions, aligning with EU efficiency standards. Enhanced by its comprehensive suite of driver aids and intelligent safety features, the X3 ensures both the thrill of driving and peace of mind.

Conclusion: The Ultimate Driving Companion

In essence, the BMW X3 represents the perfect intersection of dynamic performance, fuel efficiency, and modern-day technology. With options catering to diverse needs and preferences, it remains a leading choice for drivers seeking versatility, innovation, and luxury.

Mercedes SL Class

Introducing the Mercedes-Benz SL-Class: A Modern Icon

The Mercedes-Benz SL-Class has long been synonymous with luxury and performance, capturing the imagination of car enthusiasts around the globe. The latest iteration continues this tradition, introducing a host of advanced technologies, refined design elements, and impressive performance capabilities.

A Look Under the Bonnet: Engine Specifications

The SL-Class showcases a range of powerful engines, designed to cater to both purists and those seeking the ultimate in speed. The available engines include a selection of petrol mild-hybrid, petrol, and pioneering plug-in hybrid options. Delivering between 381 and an astounding 816 PS, these engines offer unmatched versatility and performance for a roadster of this calibre.

The line-up's top-tier plug-in hybrid model is especially noteworthy, combining substantial power with an electric range of 13 km. This variant underscores Mercedes-Benz's commitment to merging traditional automotive prowess with future-facing innovation.

Driving Dynamics: Power Meets Precision

True to its legacy, the SL-Class offers a driving experience that blends power with precision. Featuring options for both rear-wheel and all-wheel drive configurations, the SL-Class ensures optimal traction and stability under various driving conditions. An advanced automatic transmission complements this, providing seamless gear transitions that enhance driving pleasure.

With a maximum speed ranging from 275 to 317 km/h and a swift 0-100 km/h acceleration time between 2.9 and 4.9 seconds, the SL-Class promises an exhilarating ride without compromising on luxury.

Technological Triumphs and Innovations

Mercedes-Benz has equipped the SL-Class with cutting-edge technologies. These include the MBUX infotainment system, which offers an intuitive control interface for navigation, entertainment, and vehicle settings. The inclusion of AI-driven features ensures that each drive is tailored to the driver’s preferences, enhancing convenience and comfort.

Safety is paramount in the SL-Class, with an array of driver-assistance technologies designed to protect and assist. From active brake assist to adaptive cruise control, each system is crafted to ensure maximum safety for both driver and passengers.

Exquisite Design: A Fusion of Elegance and Sportiness

The SL-Class is more than just a high-performance vehicle—it's a masterpiece of design. Its sleek silhouette and aerodynamic body lines exude elegance, while the luxurious interior offers unparalleled comfort. The craftsmanship is evident in every detail, from the quality of materials to the ergonomic layout of the driver’s cockpit.

The classic roadster proportions are enhanced by modern design touches, reflecting the storied history of the SL-Class while firmly placing it in the present. The result is a vehicle that is as pleasing to the eye as it is on the road.

Efficiency and Environmental Responsibility

Despite its powerful performance credentials, the SL-Class maintains a focus on efficiency. With fuel consumption figures ranging from 7.7 to 13.1 litres per 100 km, Mercedes-Benz demonstrates that performance and environmental responsibility can coexist.

The plug-in hybrid variant stands out, offering an efficient mode of travel that minimises CO2 emissions and maximises energy usage. This commitment to sustainability is a testament to Mercedes-Benz’s forward-thinking approach to automotive excellence.

A New Era for the Iconic Roadster

The Mercedes-Benz SL-Class represents a new era in automotive innovation, combining state-of-the-art technology and supreme performance with unmistakable style and luxury. As it continues to redefine what a modern roadster can be, the SL-Class remains a beacon of excellence and engineering prowess.

The prices and data displayed are estimates based on German list prices and may vary by country. This information is not legally binding.