The official figure is what a Mercedes-Benz A-Class managed in a laboratory. These are the figures owners report from the road, engine by engine, for every generation we hold. Add your own at the bottom and the averages get better for the next buyer.
| Engine | Official (NEDC) | Official (WLTP) | Real MPG | % of official | Owners report |
|---|---|---|---|---|---|
| A150 | 45.6 | – | 38.4 | 84% | – |
| A150 BlueEfficiency | 48.7 | – | 38.6 | 79% | – |
| A160 Autotronic | 41.5 | – | 34.0 | 82% | – |
| A160 BlueEfficiency | 42.8–47.1 | – | 39.6 | 88% | – |
| A160 CDI | 57.6 | – | 47.9 | 83% | – |
| A160 CDI Autotronic | 52.3 | – | 46.9 | 90% | – |
| A160 CDI BlueEfficiency | 52.3–64.2 | – | 54.6 | 94% | – |
| A170 | 42.8 | – | 38.9 | 91% | – |
| A170 BlueEfficiency | 46.3 | – | 36.0 | 78% | – |
| A180 Autotronic | 39.8–41.5 | – | 35.6 | 88% | – |
| A180 Blue Efficiency | 42.8–44.8 | – | – | – | – |
| A180 BlueEfficiency | 43.5–44.8 | – | – | – | – |
| A180 CDI | 52.3–57.6 | – | 49.4 | 90% | – |
| A180 CDI Autotronic | 51.4–52.3 | – | 44.6 | 86% | – |
| A200 | 38.1 | – | 36.6 | 96% | – |
| A200 CDI | 53.1 | – | 48.5 | 91% | – |
| A200 Turbo | 33.6 | – | 27.5 | 82% | – |
| Engine | Official (NEDC) | Official (WLTP) | Real MPG | % of official | Owners report |
|---|---|---|---|---|---|
| A 180 | 50.4 | – | 37.5 | 74% | 33.0–44.1 |
| A 180 Automatic | 53.3 | – | 36.0 | 67% | – |
| A 180 d | 70.6 | – | 59.6 | 84% | – |
| A 180 d Automatic | 68.9 | – | 60.1 | 87% | 48.0–70.0 |
| A 200 | 49.6 | – | 42.4 | 85% | – |
| A 200 Automatic | 53.3 | – | 35.2 | 66% | – |
| A 200 d | 64.2 | – | 45.5 | 71% | 35.0–52.0 |
| A 200 d Automatic | 68.9 | – | 49.6 | 72% | – |
| A 250 4Matic | 42.2–42.8 | – | – | – | – |
| A160 | 51.4–52.3 | – | 35.4 | 68% | 30.0–45.0 |
| A160 Automatic | 52.3–54.3 | – | 39.4 | 74% | – |
| A180 | 50.4–51.4 | – | 39.8 | 78% | – |
| A180 Automatic | 52.3–55.4 | – | 41.7 | 77% | – |
| A180 BlueEfficiency | 51.4 | – | 48.9 | 95% | 41.5–57.6 |
| A180 CDI | 70.6 | – | 59.1 | 84% | 46.9–74.0 |
| A180 CDI Eco | 78.5 | – | 64.3 | 82% | 54.3–74.9 |
| A180 d | 72.4–80.7 | – | 57.2 | 75% | 45.0–70.0 |
| A180 d Automatic | 74.3–76.4 | – | 58.2 | 77% | – |
| A200 | 49.6–53.3 | – | 37.3 | 72% | 30.0–48.0 |
| A200 Automatic | 52.3–53.3 | – | 39.3 | 74% | – |
| A200 CDI | 62.8–64.2 | – | 50.7 | 80% | – |
| A200 CDI Automatic | 68.9 | – | 50.6 | 73% | 42.4–58.0 |
| A200 d | 65.7–68.9 | – | 47.2 | 70% | 40.0–55.3 |
| A200 d Automatic | 70.6–74.3 | – | 49.4 | 68% | 39.8–61.0 |
| A220 CDI | 67.3 | – | 42.9 | 64% | 33.4–53.2 |
| A220 d | 68.9 | – | 50.3 | 73% | – |
| A220 d 4Matic | 58.9 | – | 49.8 | 84% | 46.0–52.0 |
| A220 d Automatic | 68.9 | – | 45.1 | 65% | – |
| A250 | 41.5 | – | 31.6 | 76% | – |
| A250 4Matic | 42.2 | – | 28.4 | 67% | – |
| A250 4Matic Automatic | 42.8 | – | 45.7 | 107% | 37.5–53.2 |
| A250 Automatic | 44.8–47.1 | – | 37.0 | 80% | – |
| Engine | Official (NEDC) | Official (WLTP) | Real MPG | % of official | Owners report |
|---|---|---|---|---|---|
| A 180 | 50.4–51.4 | 46.3–47.9 | 46.0 | 98%* | 36.7–53.0 |
| A 180 Automatic | 53.3–54.3 | 46.3–47.1 | 44.4 | 95%* | 38.0–52.0 |
| A 180 d | – | 46.3–58.9 | 65.8 | 125%* | 62.9–70.4 |
| A 180 d Automatic | 67.3–74.3 | 55.4–64.2 | 61.4 | 103%* | 47.0–69.0 |
| A 180 MHEV Automatic | – | 44.1–48.7 | – | – | – |
| A 200 | 47.1 | 46.3–47.9 | 44.1 | 94%* | – |
| A 200 Automatic | 53.3 | 46.3–47.1 | 42.4 | 91%* | 32.6–50.3 |
| A 200 d Automatic | – | 45.6–57.7 | 50.3 | 97%* | 41.0–58.9 |
| A 200 MHEV Automatic | – | 44.1–48.7 | 48.7 | 105%* | – |
| A 220 Automatic | 45.6 | 37.7 | 34.6 | 92%* | 32.0–41.8 |
| A 220 Automatic 4Matic | 43.5 | 35.8 | – | – | – |
| A 220 d | – | 55.4 | – | – | – |
| A 220 d Automatic | – | 56.5 | 47.9 | 85%* | 44.6–53.7 |
| A 250 Automatic | 45.6 | 38.7–41.5 | 32.0 | 80%* | 25.0–41.5 |
| A 250 Automatic 4Matic | 43.5 | 40.9 | – | – | – |
| A 250 e | – | 217.3–282.5 | 95.5 | 38%* | – |
| A 250 e 109 motor | – | 256.8–353.1 | – | – | – |
| A 35 AMG | – | 32.8–34.9 | 25.7 | 76%* | 26.0–28.0 |
| A 35 AMG 4Matic | 38.7 | 34.0 | 31.0 | 91%* | 25.0–37.0 |
| A 35 MHEV AMG | – | 32.8–33.2 | – | – | – |
| A 45 AMG 4Matic | – | 32.5 | – | – | – |
| A 45 S AMG | – | 31.0 | – | – | – |
| V8 986 | – | 38.6 | – | – | – |
| V8 986 Spyder | – | 17.2–44.1 | – | – | – |
| Engine | Official (NEDC) | Official (WLTP) | Real MPG | % of official | Owners report |
|---|---|---|---|---|---|
| A 180 | – | 47.1–47.9 | – | – | – |
| A 180 Automatic | – | 46.3–47.9 | – | – | – |
| A 180 d | – | 58.9–61.4 | – | – | – |
| A 180 d Automatic | 53.3 | 56.5–61.4 | 60.4 | 102%* | – |
| A 180 MHEV Automatic | – | 44.8–48.7 | – | – | – |
| A 200 | 44.9–46.3 | 47.1–47.9 | – | – | – |
| A 200 Automatic | 42.8 | 46.3–47.9 | 42.8 | 91%* | – |
| A 200 d Automatic | – | 57.7–58.9 | – | – | – |
| A 200 MHEV Automatic | – | 44.8–48.7 | – | – | – |
| A 220 Automatic | – | 38.2 | 47.1 | 123%* | – |
| A 220 Automatic 4Matic | 39.8 | 36.2 | – | – | – |
| A 220 d Automatic | – | 57.7 | – | – | – |
| A 250 Automatic | 41.5 | 40.9–41.5 | – | – | – |
| A 250 e | – | 282.5 | – | – | – |
| A 250 e 109 motor | – | 282.5 | – | – | – |
| A 35 AMG | – | 34.0–35.3 | – | – | – |
| A 35 AMG 4Matic | – | 34.9 | 28.5 | 82%* | – |
| A 35 MHEV AMG | – | 33.6–34.0 | – | – | – |
All figures in miles per gallon (UK). “Owners report” is the spread of individual submissions for that engine. * Measured against the WLTP figure rather than NEDC.
What does yours actually do? Read it off the trip computer over a full tank or work it out from litres and miles. No postcode, no sign-up. The more people add, the better the averages get, and this page stays free.
Owners report an average of 45.5 mpg across all Mercedes-Benz A-Class engines with data, about 83% of the official combined figure. The engine tables on this page give the figure for each engine and generation.
Official figures come from a laboratory test cycle, not the road. Cold starts, short trips, hills, load, tyres and driving style all cost fuel the test does not see. A gap of 10 to 30 per cent is normal; a much bigger gap on one engine usually points at a fault, a heavy right foot, or a diesel that never gets warm.
Honest John closed in August 2026 and its Real MPG section went with it. This page is where the Mercedes-Benz A-Class figures now live: rebuilt from the archived Honest John dataset, with the official figures kept alongside, and reopened for new submissions. CarAdCheck is not affiliated with Honest John or Volkswagen Financial Services.
If you used the Honest John Real MPG section before the site closed in 2026, this is where the Mercedes-Benz A-Class figures now live. The owner-reported averages above were rebuilt from the archived Honest John dataset (archived page, 2026-07) alongside the official NEDC and WLTP figures and new submissions from CarAdCheck readers, and the section is open so they keep improving. Real-world figures also feed the running-cost estimate in our free advert check.
CarAdCheck is not affiliated with Honest John or Volkswagen Financial Services. How we rebuilt Real MPG.
Fuel economy is one line on the Mercedes-Benz A-Class running-cost sheet. These guides cover the checks that stop you buying the wrong one.