Compare performance (199 HP vs 238 HP), boot space and price (37,900 £ vs 33,100 £ ) at a glance. Find out which car is the better choice for you – Lexus UX or Mercedes B Class?
All details on performance, efficiency, range and trunk space can be found in the technical comparison below – including user reviews for both models.
The automotive landscape is filled with options for potential buyers, but when it comes to the compact luxury segment, the battle between the Lexus UX and the Mercedes B-Class stands out. Each vehicle boasts distinctive designs, innovative features, and impressive performance metrics. In this comparison, we will delve into the technical aspects and innovations that make these vehicles appealing to modern drivers.
The Lexus UX is an SUV with a sleek and edgy design that embodies the brand’s modern aesthetic. Measuring 4,495 mm in length, 1,840 mm in width, and 1,545 mm in height, it provides ample road presence along with a distinctive trademark grille and striking LED lighting.
On the other hand, the Mercedes B-Class serves as a multi-purpose vehicle (MPV) with a more rounded appearance. Slightly shorter at 4,419 mm in length and wider at 1,796 mm, its 1,562 mm height promotes a spacious feel, making it a practical choice for families seeking comfort and functionality.
The powertrain configurations of both vehicles cater to a range of driving preferences. The Lexus UX offers a combination of electric and full hybrid powertrains. With the electric variant providing up to 204 HP and a torque of 300 Nm, it achieves a zero to 100 km/h acceleration in as little as 7.5 seconds. Fuel consumption stands at an impressive 5.0 L/100 km and boasts an electric range of 449 km, perfectly suited for environmentally-conscious consumers.
Contrastingly, the B-Class presents a diverse range of engine choices, including petrol MHEV, diesel, and plug-in hybrids. Power outputs range from 116 HP to a robust 238 HP, catering to both conservative and performance-driven drivers. The B-Class is also equipped with a dual-clutch automatic transmission, ensuring a smooth and responsive driving experience. Acceleration figures can reach as low as 6.5 seconds for the higher-powered variants, displaying an exciting prowess.
Both vehicles prioritize driver and passenger comfort through innovative interior technology. The Lexus UX features a refined cabin with quality materials and seamless integration of advanced tech, including a high-resolution infotainment system, premium audio options, and driver assistance features to enhance safety.
In comparison, the Mercedes B-Class shines with its user-friendly MBUX (Mercedes-Benz User Experience) system, providing intuitive voice control, navigation, and seamless smartphone connectivity. Its spacious interior can comfortably seat up to five passengers, making it a quintessential family vehicle.
Storage capabilities are vital in compact vehicles, and both the Lexus UX and B-Class provide adequate trunk space. The Lexus UX has a trunk capacity of 367 liters, which is suited for city driving and weekend getaways. On the other side, the B-Class offers a more generous capacity of 455 liters, proving itself as a practical choice for families or frequent travelers.
Efficiency remains a key consideration in automotive design. The Lexus UX outshines with its exceptional fuel efficiency and electric range, categorized as Class A in CO2 emissions, while its hybrid variant emits only 113 g/km. This makes it a great choice for eco-minded consumers.
The B-Class, while still efficient, has a wider range of CO2 emissions classified between B to E, depending on the chosen powertrain. The best performing versions can achieve a respectable 5.1 L/100 km, but the higher-performance variants come with increased emissions, which may concern some eco-conscious buyers.
Ultimately, the choice between the Lexus UX and the Mercedes B-Class boils down to personal preferences and lifestyle needs. The UX is ideal for those drawn to electrification and sporty handling, while the B-Class excels in practicality and a versatile array of powertrains. Both vehicles deliver luxury, performance, and innovative features, making the compact luxury segment an exciting choice for consumers today.
Looking at overall running costs, both models reveal some interesting differences in everyday economy.
Mercedes B Class is somewhat cheaper – starting at 33,100 £ , while the Lexus UX costs 37,900 £ . That’s a price difference of around 4,799 £.
Fuel consumption also shows a difference: the Mercedes B Class uses 2.5 L/100km and is clearly more efficient than the Lexus UX with 5 L/100km. The difference is about 2.5 L/100km.
Under the bonnet, it becomes clear which model is tuned for sportiness and which one takes the lead when you hit the accelerator.
When it comes to engine power, the Mercedes B Class offers a bit more power – delivering 238 HP compared to 199 HP. That’s roughly 39 HP more horsepower.
When accelerating from 0 to 100 km/h, the Mercedes B Class is markedly quicker – completing the sprint in 6.5 s, while the Lexus UX takes 7.9 s. That’s about 1.4 s quicker.
Beyond pure performance, interior space and usability matter most in daily life. This is where you see which car is more practical and versatile.
Both vehicles offer seating for 5 people.
In terms of curb weight, Mercedes B Class is only slightly lighter – 1,405 kg compared to 1,495 kg. The difference is around 90 kg.
When it comes to payload, the Lexus UX carries moderately more – 615 kg compared to 550 kg. That’s a difference of about 65 kg.
The Mercedes B Class is far ahead overall in the objective data comparison.
This result only shows which model scores more points on paper – not which of the two cars feels right for you.
The Lexus UX is a compact luxury crossover that blends sharp styling with a quiet, comfortable cabin, perfect for urban buyers who want premium feel without shouting about it. It rides with poise, serves up plush materials and thoughtful tech, and—while it won’t satisfy anyone chasing track thrills—it's a smart, stylish choice for everyday driving.
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The Mercedes B-Class is a smart, grown-up compact people carrier that dresses everyday practicality in a near‑premium polish, perfect for buyers who want comfort and a classy badge without the theatrics. It won’t set your pulse racing on a back road, but it will make school runs, commutes and grocery hauls feel pleasantly civilized — a reliable, slightly posh companion for real life.
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Costs and Consumption |
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Price
37,900 - 54,100 £
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Price
33,100 - 52,500 £
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Consumption L/100km
5 - 5.6 L/100km
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Consumption L/100km
2.5 - 6.9 L/100km
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Consumption kWh/100km
-
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Consumption kWh/100km
-
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Electric Range
-
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Electric Range
83 km
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Battery Capacity
-
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Battery Capacity
12.9 kWh
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co2
113 - 127 g/km
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co2
56 - 156 g/km
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Fuel tank capacity
-
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Fuel tank capacity
35 L
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Dimensions and Body |
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|---|---|
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Body Type
SUV
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Body Type
MPV
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Seats
5
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Seats
5
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Doors
-
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Doors
5
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Curb weight
1,495 - 1,555 kg
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Curb weight
1,405 - 1,745 kg
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Trunk capacity
-
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Trunk capacity
405 - 455 L
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Length
-
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Length
4,419 mm
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Width
1,840 mm
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Width
1,796 mm
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Height
-
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Height
1,562 mm
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Max trunk capacity
-
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Max trunk capacity
1,440 L
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Payload
555 - 615 kg
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Payload
505 - 550 kg
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Engine and Performance |
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|---|---|
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Engine Type
Full Hybrid
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Engine Type
Plugin Hybrid, Petrol MHEV, Diesel
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Transmission
Automatic
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Transmission
Automatic
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Transmission Detail
CVT
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Transmission Detail
Dual-Clutch Automatic
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Drive Type
Front-Wheel Drive, All-Wheel Drive
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Drive Type
Front-Wheel Drive, All-Wheel Drive
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Power HP
199 HP
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Power HP
116 - 238 HP
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Acceleration 0-100km/h
7.9 - 8.1 s
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Acceleration 0-100km/h
6.5 - 10 s
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Max Speed
-
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Max Speed
223 km/h
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Torque
-
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Torque
200 - 450 Nm
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Number of Cylinders
4
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Number of Cylinders
4
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Power kW
146 kW
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Power kW
85 - 175 kW
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Engine capacity
1,987 cm3
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Engine capacity
1,332 - 1,991 cm3
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General |
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|---|---|
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Model Year
2,025
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Model Year
2,024 - 2,025
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CO2 Efficiency Class
C, D
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CO2 Efficiency Class
B, D, E, F
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Brand
Lexus
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Brand
Mercedes-Benz
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Deutschland
France
Nederland
Great Britain
Sverige
Danmark
Suomi
Italia
Polska
España