Mercedes-Benz B-Class fuel economy (UK)
Official figures for the Mercedes-Benz B-Class from the Vehicle Certification Agency's new car lists, 2006–2026: 438 versions after removing repeats between lists. Economy is in UK (imperial) mpg; electric versions show miles per kWh and range instead. In the most recent lists (2021–2026, WLTP) combined economy is 36.7–62.8 mpg.
This model has figures from two different official tests: NEDC (older lists) and WLTP. They are shown in separate tables and must not be compared with each other.
Figures by list
| Lists | Test | Versions | Combined |
|---|---|---|---|
| 2021–2026 | WLTP | 50 | 36.7–62.8 mpg |
| 2013–2018 | NEDC | 181 | 41.5–74.3 mpg · 3.5 mi/kWh |
| 2007–2012 | NEDC | 181 | 34.4–64.2 mpg |
| 2006 | NEDC | 26 | 34.4–50.4 mpg |
Ranges are only comparable within the same test. Plug-in hybrids are listed in the tables but left out of these ranges.
WLTP figures, VCA lists 2021–2026
WLTP is the official test for new cars from September 2017. Its figures are closer to real-world driving than the older NEDC figures.
| Version | Fuel | Combined | L/100 km | CO₂ g/km | In lists |
|---|---|---|---|---|---|
| B-Class MPV B 200 d · A8 · 1950 cc | Diesel | 55.4 mpg | 5.1 | 133 | 2023–2026 |
| B-Class MPV B 200 d · A8 · 1950 cc | Diesel | 50.4 mpg | 5.6 | 148 | 2023–2026 |
| B-Class MPV B 200 · A7 · 1332 cc | Hybrid | 47.9 mpg | 5.9 | 134 | 2025–2026 |
| B-Class MPV B 200 · A7 · 1332 cc | Hybrid | 42.8 mpg | 6.6 | 149 | 2025–2026 |
| B-Class MPV B 200 · A7 · 1332 cc | Hybrid | 46.3 mpg | 6.1 | 138 | 2024 |
| B-Class MPV B 200 · A7 · 1332 cc | Hybrid | 41.5 mpg | 6.8 | 154 | 2024 |
| B-Class MPV B 200 d · A8 · 1950 cc | Diesel | 56.5 mpg | 5.0 | 130 | 2022–2023 |
| B-Class MPV B 200 d · A8 · 1950 cc | Diesel | 49.6 mpg | 5.7 | 148 | 2021–2023 |
| B-Class MPV B 200 · A7 · 1332 cc | Hybrid | 47.1 mpg | 6.0 | 136 | 2023 |
| B-Class MPV B 200 · A7 · 1332 cc | Hybrid | 42.8 mpg | 6.6 | 150 | 2023 |
| B-Class MPV B 180 · A7 · 1332 cc | Petrol | 47.1 mpg | 6.0 | 136 | 2022–2023 |
| B-Class MPV B 200 · A7 · 1332 cc | Petrol | 47.1 mpg | 6.0 | 137 | 2022–2023 |
| B-Class MPV B 180 · A7 · 1332 cc | Petrol | 41.5 mpg | 6.8 | 154 | 2021–2023 |
| B-Class MPV B 200 · A7 · 1332 cc | Petrol | 41.5 mpg | 6.8 | 154 | 2021–2023 |
| B-Class MPV B 250 e · A8 · 1332 cc | Plug-in hybrid | 282.5 mpg* 42 mi electric | 1.0 | 23 | 2022–2023 |
| B-Class MPV B 250 e · A8 · 1332 cc | Plug-in hybrid | 201.8 mpg* 35 mi electric | 1.4 | 33 | 2022–2023 |
| B Class B 180 d · A7 · 1461 cc | Diesel | 62.8 mpg | 4.5 | 119 | 2020–2021 |
| B-Class MPV B 200 d · A8 · 1950 cc | Diesel | 58.9 mpg | 4.8 | 130 | 2021 |
| B Class B 200 d · A8 · 1950 cc | Diesel | 57.7 mpg | 4.9 | 128 | 2020–2021 |
| B Class B 220 d · A8 · 1950 cc | Diesel | 57.7 mpg | 4.9 | 129 | 2020–2021 |
| B-Class MPV B 180 d · A8 · 1950 cc | Diesel | 57.7 mpg | 4.9 | 134 | 2021 |
| B-Class MPV B 220 d · A8 · 1950 cc | Diesel | 57.7 mpg | 4.9 | 132 | 2021 |
| B Class B 180 d · A7 · 1461 cc | Diesel | 53.3 mpg | 5.3 | 138 | 2020–2021 |
| B Class B 200 d · A8 · 1950 cc | Diesel | 51.4 mpg | 5.5 | 145 | 2020–2021 |
| B Class B 220 d · A8 · 1950 cc | Diesel | 50.4 mpg | 5.6 | 146 | 2020–2021 |
| B-Class MPV B 180 d · A8 · 1950 cc | Diesel | 49.6 mpg | 5.7 | 150 | 2021 |
| B-Class MPV B 200 d · A8 · 1950 cc | Diesel | 49.6 mpg | 5.7 | 130 | 2021 |
| B-Class MPV B 220 d · A8 · 1950 cc | Diesel | 49.6 mpg | 5.7 | 150 | 2021 |
| B-Class MPV B 220 d · A8 · 1950 cc | Diesel | 49.6 mpg | 5.7 | 132 | 2021 |
| B-Class MPV B 220 d · A8 · 1950 cc | Diesel | 49.6 mpg | 5.7 | 149 | 2021 |
| B-Class MPV B 180 d · A8 · 1950 cc | Diesel | 48.7 mpg | 5.8 | 133 | 2021 |
| B-Class MPV B 180 d · A8 · 1950 cc | Diesel | 48.7 mpg | 5.8 | 150 | 2021 |
| B-Class MPV B 180 · A7 · 1332 cc | Petrol | 47.9 mpg | 5.9 | 137 | 2021 |
| B-Class MPV B 200 · A7 · 1332 cc | Petrol | 47.9 mpg | 5.9 | 137 | 2021 |
| B Class B 180 · A7 · 1332 cc | Petrol | 47.1 mpg | 6.0 | 137 | 2020–2021 |
| B Class B 200 · A7 · 1332 cc | Petrol | 47.1 mpg | 6.0 | 137 | 2020–2021 |
| B-Class MPV B 250 · A7 · 1991 cc | Petrol | 43.5 mpg | 6.5 | 155 | 2021 |
| B Class B 250 · A7 · 1991 cc | Petrol | 41.5 mpg | 6.8 | 155 | 2020–2021 |
| B-Class MPV B 180 · A7 · 1332 cc | Petrol | 41.5 mpg | 6.8 | 137 | 2021 |
| B-Class MPV B 200 · A7 · 1332 cc | Petrol | 41.5 mpg | 6.8 | 137 | 2021 |
| B Class B 180 · A7 · 1332 cc | Petrol | 40.9 mpg | 6.9 | 157 | 2020–2021 |
| B Class B 200 · A7 · 1332 cc | Petrol | 40.9 mpg | 6.9 | 157 | 2020–2021 |
| B-Class MPV B 250 · A7 · 1991 cc | Petrol | 38.2 mpg | 7.4 | 155 | 2021 |
| B-Class MPV B 250 · A7 · 1991 cc | Petrol | 38.2 mpg | 7.4 | 172 | 2021 |
| B-Class MPV B 250 · A7 · 1991 cc | Petrol | 37.2 mpg | 7.6 | 174 | 2021 |
| B Class B 250 · A7 · 1991 cc | Petrol | 36.7 mpg | 7.7 | 176 | 2020–2021 |
| B-Class MPV B 250 e · A8 · 1332 cc | Plug-in hybrid | 282.5 mpg* 43 mi electric | 1.0 | 33 | 2021 |
| B-Class MPV B 250 e · A8 · 1332 cc | Plug-in hybrid | 256.8 mpg* 47 mi electric | 1.1 | 25 | 2021 |
| B-Class MPV B 250 e · A8 · 1332 cc | Plug-in hybrid | 201.8 mpg* 42 mi electric | 1.4 | 32 | 2021 |
| B-Class MPV B 250 e · A8 · 1332 cc | Plug-in hybrid | 188.3 mpg* 37 mi electric | 1.5 | 23 | 2021 |
* Plug-in hybrids: official weighted combined figure, which assumes the battery is charged regularly. Without charging, economy is much lower.
Using these figures
"In lists" shows which yearly VCA lists include the version; it is not the model year. Manufacturers supply figures to the VCA voluntarily, so some makes are missing from some years' lists (for example several large brands between 2019 and 2024); a gap in the years does not mean the car was not sold. Click an mpg figure to open the trip fuel cost calculator with it in UK units, or convert it with the fuel economy converter. Real-world economy is usually lower than official figures — measure yours with the MPG calculator.
Tyre and wheel sizes for this model: Mercedes-Benz B-Class tyre sizes.
Source: Vehicle Certification Agency (VCA), Car Fuel Data — official data download (lists 2006–2026, downloaded 2026-10-22). © Crown copyright, reused under the licence published for this dataset on data.gov.uk (Creative Commons Attribution). Data processed by us (duplicates merged, model names tidied); the VCA is not responsible for our use of it. The VCA states that figures are supplied by manufacturers, may not be achieved in real-world driving, and are used at the user's own risk.