Compare performance (238 HP vs 156 HP), boot space and price (33,100 £ vs 21,800 £ ) at a glance. Find out which car is the better choice for you – Mercedes B Class or Fiat 600?
Interest in compact vehicles has surged, with consumers demanding greater efficiency and enhanced features. The Fiat 600, an SUV with a burgeoning reputation, and the established Mercedes B-Klasse MPV, are two market contenders. Here's an in-depth look at how these two vehicles stack up against each other on technical specs and innovations.
The Fiat 600 offers both petrol Mild Hybrid Electric Vehicle (MHEV) and fully electric options. Engine power ranges from 100 to 156 HP, complemented by notable torque figures of up to 260 Nm. Acceleration times span from 10.5 to 8.5 seconds for 0-100 km/h, with top speeds reaching up to 200 km/h in electric mode. With a battery capacity of 51 kWh, its electric variant promises a commendable range of 409 km per charge.
In contrast, the Mercedes B-Klasse comes with diverse engine configurations: petrol MHEV, diesel, and plug-in hybrid. This diversity is reflected in a horsepower range from 116 to 238 HP and torque peaking at a strong 450 Nm. The acceleration performance is slightly brisker than the Fiat, with the quickest model achieving 0-100 km/h in just 6.5 seconds and reaching top speeds up to 250 km/h. The plug-in hybrid version offers a shorter electric range of 83 km, backed by a 12.9 kWh battery.
Fiat 600's petrol MHEV variant records a consumption of 4.8 L/100km, while its electric option consumes 15.1 kWh/100km. CO2 emissions are rated between 0 and 109 g/km, making it a stalwart for environmentally conscious drivers with efficiency classes ranging from A to C.
The B-Klasse, depending on the engine, sees fuel consumption between 0.8 and 7.1 L/100km. Its CO2 emissions vary widely from an impressive 18 to 160 g/km, offering emissions classes stretching from B to F, highlighting the option for both greener choices and traditional combustion efficiency.
The Fiat 600 stands 4178 mm in length, 1779 mm in width, and 1523-1525 mm in height. Despite being compact, it offers a considerable trunk capacity of up to 385 liters, suitable for small families or city life.
The slightly more substantial B-Klasse measures 4419 mm in length, 1796 mm in width, and 1562 mm in height. With a larger trunk volume of up to 455 liters, it provides more room for cargo, making it a go-to for more substantial hauling needs or larger families.
The Fiat 600 offers front-wheel drive and an automatic transmission with a dual-clutch system. Its lightweight design, with curb weights ranging from 1355 to 1595 kg, ensures a nimble urban driving experience.
Mercedes' B-Klasse presents both front and all-wheel drive options, also employing a dual-clutch automatic transmission. With additional weight, ranging up to 1745 kg, it maintains stability and comfort on longer journeys, appealing to those seeking luxury and practicality.
The Fiat 600 and Mercedes B-Klasse serve distinct needs within the compact vehicle segment. The Fiat, with its efficient and environmentally-friendly variants, caters to urban dwellers and eco-conscious drivers. Meanwhile, the Mercedes B-Klasse, with its expanded engine choices and larger cargo room, offers versatility and higher performance for those longer trips or family outings. Both vehicles provide attractive features—but choosing between them will depend significantly on personal priorities and lifestyle needs.
Price and efficiency are often the first things buyers look at. Here it becomes clear which model has the long-term edge – whether at the pump, the plug, or in purchase price.
Fiat 600 is significantly cheaper – starting at 21,800 £ , while the Mercedes B Class costs 33,100 £ . That’s a price difference of around 11,281 £.
Fuel consumption also shows a difference: the Mercedes B Class uses 2.5 L/100km and is clearly more efficient than the Fiat 600 with 4.8 L/100km. The difference is about 2.3 L/100km.
As for electric range, the Fiat 600 offers clearly more range – reaching up to 409 km, about 326 km more than the Mercedes B Class.
Power, torque and acceleration are the classic benchmarks for car enthusiasts – and here, some clear differences start to show.
When it comes to engine power, the Mercedes B Class offers visibly more power – delivering 238 HP compared to 156 HP. That’s roughly 82 HP more horsepower.
When accelerating from 0 to 100 km/h, the Mercedes B Class is noticeably quicker – completing the sprint in 6.5 s, while the Fiat 600 takes 8.5 s. That’s about 2 s quicker.
Looking at top speed, the Mercedes B Class is somewhat faster – reaching 223 km/h, while the Fiat 600 tops out at 200 km/h. The difference is around 23 km/h.
There’s also a difference in torque: the Mercedes B Class delivers clearly more torque with 450 Nm compared to 260 Nm. That’s about 190 Nm more.
Cabin size, boot volume and payload all play a role in everyday practicality. Here, comfort and flexibility make the difference.
Both vehicles offer seating for 5 people.
In terms of curb weight, Fiat 600 is only slightly lighter – 1,355 kg compared to 1,405 kg. The difference is around 50 kg.
Looking at boot space, the Mercedes B Class offers slightly more boot space – 455 L compared to 385 L. That’s a difference of about 70 L.
For maximum load capacity, the Mercedes B Class offers slightly more capacity – up to 1,440 L, about 184 L more than the Fiat 600.
When it comes to payload, the Mercedes B Class carries visibly more – 550 kg compared to 430 kg. That’s a difference of about 120 kg.
The Mercedes B Class comes out modestly ahead 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 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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The Fiat 600 is small, cheeky and utterly charming, a pocket-sized Italian that packs more personality than its size suggests. Ideal for city buyers who want fuss-free motoring with a playful driving character, it puts smiles ahead of spreadsheets.
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Costs and Consumption |
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Price
33,100 - 52,500 £
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Price
21,800 - 31,300 £
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Consumption L/100km
2.5 - 6.9 L/100km
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Consumption L/100km
4.8 L/100km
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Consumption kWh/100km
-
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Consumption kWh/100km
15.1 kWh/100km
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Electric Range
83 km
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Electric Range
409 km
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Battery Capacity
12.9 kWh
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Battery Capacity
52 kWh
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co2
56 - 156 g/km
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co2
0 - 109 g/km
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Fuel tank capacity
35 L
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Fuel tank capacity
44 L
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Dimensions and Body |
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Body Type
MPV
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Body Type
SUV
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Seats
5
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Seats
5
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Doors
5
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Doors
5
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Curb weight
1,405 - 1,745 kg
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Curb weight
1,355 - 1,595 kg
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Trunk capacity
405 - 455 L
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Trunk capacity
360 - 385 L
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Length
4,419 mm
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Length
4,178 mm
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Width
1,796 mm
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Width
1,779 mm
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Height
1,562 mm
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Height
1,523 - 1,525 mm
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Max trunk capacity
1,440 L
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Max trunk capacity
1,231 - 1,256 L
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Payload
505 - 550 kg
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Payload
427 - 430 kg
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Engine and Performance |
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Engine Type
Plugin Hybrid, Petrol MHEV, Diesel
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Engine Type
Electric, Petrol MHEV
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Transmission
Automatic
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Transmission
Automatic
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Transmission Detail
Dual-Clutch Automatic
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Transmission Detail
Reduction Gearbox, Dual-Clutch Automatic
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Drive Type
Front-Wheel Drive, All-Wheel Drive
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Drive Type
Front-Wheel Drive
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Power HP
116 - 238 HP
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Power HP
110 - 156 HP
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Acceleration 0-100km/h
6.5 - 10 s
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Acceleration 0-100km/h
8.5 - 10.5 s
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Max Speed
223 km/h
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Max Speed
150 - 200 km/h
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Torque
200 - 450 Nm
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Torque
205 - 260 Nm
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Number of Cylinders
4
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Number of Cylinders
3
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Power kW
85 - 175 kW
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Power kW
81 - 115 kW
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Engine capacity
1,332 - 1,991 cm3
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Engine capacity
1,199 cm3
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General |
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Model Year
2,024 - 2,025
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Model Year
2,023 - 2,025
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CO2 Efficiency Class
B, D, E, F
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CO2 Efficiency Class
A, C
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Brand
Mercedes-Benz
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Brand
Fiat
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Deutschland
France
Nederland
Great Britain
Sverige
Danmark
Suomi
Italia
Polska
España