Owners report 42.0 mpg from a Mercedes-Benz C-Class, about 84% of the official figure. On its NEDC-tested engines that is 82%, about typical: the median NEDC-tested car in this 8,216-engine dataset returns 82%. The tables below give the figure for every engine and generation we hold. Add your own at the bottom and the averages get better for the next buyer.
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Check a Mercedes-Benz C-Class advert (free) →| Engine | Official (NEDC) | Official (WLTP) | Real MPG | % of official | Owners report |
|---|---|---|---|---|---|
| C180 Kompressor | 35.8–37.2 | – | 34.9 | 96% | – |
| C200 CDI | 41.5–46.3 | – | 42.0 | 96% | – |
| C200 Kompressor | 35.3 | – | 30.0 | 85% | – |
| C220 CDI | 40.9–44.1 | – | 40.5 | 95% | – |
| C230 | 29.4–30.4 | – | 25.0 | 83% | – |
| C280 | 29.1 | – | 29.8 | 102% | – |
| C320 CDI | 38.9 | – | 37.3 | 96% | – |
| C350 | 28.2 | – | – | – | – |
| C55 AMG | 22.9 | – | 18.7 | 82% | – |
| Engine | Official (NEDC) | Official (WLTP) | Real MPG | % of official | Owners report |
|---|---|---|---|---|---|
| C160 | 37.2 | – | 34.1 | 92% | – |
| C180 Kompressor | 37.2 | – | 32.6 | 88% | – |
| C200 CDI | 43.5 | – | 43.9 | 101% | – |
| C200 Kompressor | 35.3 | – | 30.8 | 87% | – |
| C220 CDI | 42.8 | – | 41.1 | 96% | – |
| C230 | 30.4 | – | 27.2 | 89% | – |
| C350 | 27.4 | – | 33.3 | 121% | – |
| Engine | Official (NEDC) | Official (WLTP) | Real MPG | % of official | Owners report |
|---|---|---|---|---|---|
| C180 BlueEfficiency | 42.2–47.9 | – | 36.6 | 81% | 29.0–43.7 |
| C180 BlueEfficiency Automatic | 40.4–47.9 | – | 35.1 | 79% | 26.0–42.2 |
| C180 Kompressor | 40.4 | – | 29.9 | 74% | 22.9–37.0 |
| C180 Kompressor BlueEfficiency | 43.5–44.8 | – | 41.0 | 93% | – |
| C200 CDI BlueEfficiency | 56.5–58.9 | – | 50.7 | 88% | 40.0–62.0 |
| C200 CDI BlueEfficiency Automatic | 51.4–57.7 | – | 47.3 | 87% | 37.2–56.5 |
| C200 Kompressor | 39.8 | – | 29.9 | 75% | 23.0–36.5 |
| C220 CDI | 47.9 | – | 42.3 | 88% | 32.0–52.0 |
| C220 CDI BlueEfficiency | 58.9–68.9 | – | 52.2 | 82% | 38.9–64.2 |
| C220 CDI BlueEfficiency Automatic | 50.4–64.2 | – | 48.0 | 84% | 36.0–59.3 |
| C230 | 31.0 | – | – | – | – |
| C250 BlueEfficiency | 42.2 | – | 31.8 | 75% | 26.5–35.0 |
| C250 CDI BlueEfficiency | 48.7–58.9 | – | 43.4 | 81% | – |
| C250 CDI BlueEfficiency Automatic | 56.5–58.9 | – | 44.6 | 77% | – |
| C280 | 29.1 | – | 28.4 | 97% | – |
| C320 CDI | 39.0 | – | 34.2 | 88% | 26.0–42.1 |
| C350 | 28.5 | – | 33.5 | 118% | – |
| C350 BlueEfficiency | 40.4 | – | 33.5 | 83% | – |
| C350 CDI BlueEfficiency | 42.8–47.9 | – | 37.2 | 82% | – |
| C63 AMG | 23.5 | – | 18.2 | 77% | 13.8–22.3 |
| C63 AMG Edition 507 | 23.5 | – | 13.8 | 59% | 12.5–16.0 |
| Engine | Official (NEDC) | Official (WLTP) | Real MPG | % of official | Owners report |
|---|---|---|---|---|---|
| C180 BlueEfficiency | 41.5–47.9 | – | 38.1 | 85% | – |
| C180 BlueEfficiency Automatic | 42.8–47.9 | – | 36.7 | 81% | – |
| C180 CGI BlueEfficiency | 40.4 | – | 39.5 | 98% | – |
| C180 CGI BlueEfficiency Automatic | 38.2 | – | 35.7 | 93% | – |
| C180 Kompressor BlueEfficiency | 42.8 | – | 31.9 | 75% | – |
| C200 CDI BlueEfficiency | 54.3–58.9 | – | 54.8 | 97% | – |
| C200 CDI BlueEfficiency Automatic | 48.7–55.4 | – | 46.4 | 89% | – |
| C200 Kompressor | 38.7 | – | 32.0 | 83% | – |
| C220 CDI | 47.9 | – | 41.7 | 87% | – |
| C220 CDI BlueEfficiency | 60.1–65.7 | – | 51.0 | 81% | – |
| C220 CDI BlueEfficiency Automatic | 48.7–57.6 | – | 46.4 | 87% | – |
| C230 | 30.4 | – | – | – | – |
| C250 BlueEfficiency | 41.5 | – | 33.2 | 80% | – |
| C250 CDI BlueEfficiency | 46.3–55.4 | – | 45.1 | 89% | – |
| C250 CDI BlueEfficiency Automatic | 54.3 | – | 42.9 | 79% | – |
| C280 | 29.4 | – | – | – | – |
| C320 CDI | 37.7 | – | 35.5 | 94% | – |
| C350 | 28.0 | – | 35.4 | 127% | – |
| C350 BlueEfficiency | 38.7 | – | 42.5 | 110% | – |
| C350 CDI BlueEfficiency | 41.5–47.1 | – | 38.1 | 86% | – |
| C63 AMG | 23.2 | – | 19.2 | 83% | – |
| C63 AMG Edition 507 | 23.2 | – | – | – | – |
| C63 AMG S | 23.2 | – | – | – | – |
| Engine | Official (NEDC) | Official (WLTP) | Real MPG | % of official | Owners report |
|---|---|---|---|---|---|
| C180 BlueEfficiency | 38.7–44.1 | – | 36.0 | 87% | – |
| C180 BlueEfficiency Automatic | 40.4–44.8 | – | 32.8 | 77% | 25.0–40.0 |
| C220 CDI BlueEfficiency | 55.4–68.9 | – | 51.5 | 83% | 40.2–63.0 |
| C220 CDI BlueEfficiency Automatic | 53.3–57.7 | – | 44.0 | 79% | 34.0–54.0 |
| C250 BlueEfficiency | 40.4 | – | 29.2 | 72% | 25.9–33.6 |
| C250 CDI BlueEfficiency | 52.3 | – | 44.2 | 84% | 35.0–51.0 |
| C250 CDI BlueEfficiency Automatic | 53.3 | – | 44.1 | 83% | 34.0–54.0 |
| C250 d Automatic | 52.3 | – | 45.5 | 87% | – |
| C350 BlueEfficiency | 40.4 | – | 30.8 | 76% | 25.0–37.0 |
| C63 AMG Edition 507 | 23.5 | – | – | – | – |
| Engine | Official (NEDC) | Official (WLTP) | Real MPG | % of official | Owners report |
|---|---|---|---|---|---|
| AMG C 63 | 28.5–34.5 | 25.0 | 20.3 | 81%* | 16.2–25.2 |
| AMG C 63 S | 28.5–34.5 | 25.2 | 22.8 | 90%* | 17.0–26.9 |
| C 180 | 47.1–47.9 | 37.7 | 43.8 | 116%* | 43.0–45.0 |
| C 180 Automatic | 44.1–45.6 | 35.6 | 33.0 | 93%* | 31.0–37.0 |
| C 200 1.5 4Matic Automatic | 43.5 | – | 33.4 | 77% | 31.0–40.0 |
| C 200 1.5 Automatic | 46.3–47.1 | 44.1 | 33.0 | 75%* | 28.0–39.0 |
| C 200 2.0 | 49.6–53.3 | – | 38.1 | 74% | 28.8–47.1 |
| C 200 2.0 4Matic Automatic | 40.9–41.5 | – | 36.2 | 88% | 31.7–39.8 |
| C 200 2.0 Automatic | 48.7–53.3 | 35.8 | 37.9 | 106%* | 28.2–46.0 |
| C 200 Automatic | – | 35.8 | – | – | – |
| C 200 d 1.6 | 65.7–72.4 | 51.4 | 52.3 | 102%* | 37.4–60.0 |
| C 200 d 1.6 Automatic | 62.8–67.3 | 48.7 | 51.2 | 105%* | 40.0–58.4 |
| C 220 d 2.0 4Matic Automatic | 57.7 | 42.2 | 47.8 | 113%* | 38.0–55.0 |
| C 220 d 2.0 Automatic | 61.4–64.2 | 47.1 | 49.9 | 106%* | 39.8–62.8 |
| C 220 d 2.1 | 67.3–70.6 | – | 55.1 | 80% | 41.0–66.0 |
| C 220 d 2.1 4Matic Automatic | 58.9–61.4 | – | 42.8 | 71% | 35.0–49.0 |
| C 220 d 2.1 Automatic | 61.4–65.7 | – | 48.6 | 77% | 36.0–59.8 |
| C 220 d Automatic | 61.4–65.7 | 45.6–55.4 | – | – | – |
| C 250 d 2.1 4Matic Automatic | 58.9–61.4 | – | 43.4 | 72% | 33.0–53.5 |
| C 250 d 2.1 Automatic | 61.4–65.7 | – | 45.1 | 71% | 35.0–56.7 |
| C 300 Automatic | 42.2–43.5 | 35.8 | 34.3 | 96%* | 28.0–42.0 |
| C 300 d 4Matic Automatic | 53.3 | 42.2 | – | – | – |
| C 300 d Automatic | 57.7 | 43.5 | 47.5 | 109%* | 41.5–54.7 |
| C 300 de Automatic | – | 235.4 | 62.5 | 27%* | 62.0–63.0 |
| C 300 e Automatic | – | 188.3 | – | – | – |
| C 300 h | 74.3–78.5 | – | 50.0 | 65% | 37.0–57.7 |
| C 350 e | 134.5 | – | 44.2 | 33% | 34.4–56.1 |
| Engine | Official (NEDC) | Official (WLTP) | Real MPG | % of official | Owners report |
|---|---|---|---|---|---|
| AMG C 63 | 28.3–33.6 | 25.0 | 26.3 | 105%* | – |
| AMG C 63 S | 28.3–33.6 | 24.8 | – | – | – |
| C 180 | 46.3–47.1 | 37.7 | – | – | – |
| C 180 Automatic | 42.2–43.5 | – | 33.5 | 78% | – |
| C 200 1.5 | – | 38.7 | – | – | – |
| C 200 1.5 4Matic Automatic | 42.2 | – | 39.4 | 93% | – |
| C 200 1.5 Automatic | 44.1–45.6 | – | 37.1 | 83% | – |
| C 200 2.0 | 49.6–51.4 | – | 39.9 | 79% | – |
| C 200 2.0 4Matic Automatic | 40.4–40.9 | 34.5 | 35.6 | 103%* | 35.0–36.1 |
| C 200 2.0 Automatic | 47.9–51.4 | 34.5 | 37.3 | 108%* | – |
| C 200 2.0 d | 65.7 | – | – | – | – |
| C 200 d 1.6 | 61.4–67.3 | 49.6 | 53.2 | 107%* | 47.0–58.8 |
| C 200 d 1.6 Automatic | 61.4–65.7 | 47.1 | 49.6 | 105%* | – |
| C 220 d 2.0 4Matic Automatic | 56.5 | 41.5 | – | – | – |
| C 220 d 2.0 Automatic | 58.9–60.1 | 46.3 | 50.3 | 109%* | – |
| C 220 d 2.1 | 62.8–67.3 | – | 51.4 | 79% | 39.0–62.0 |
| C 220 d 2.1 4Matic Automatic | 57.7–60.1 | – | 48.2 | 82% | – |
| C 220 d 2.1 Automatic | 60.1–64.2 | – | 48.3 | 78% | – |
| C 220 d Automatic | 58.9–64.2 | 44.8–54.3 | – | – | – |
| C 250 d 2.1 4Matic Automatic | 57.7–60.1 | – | 44.6 | 76% | – |
| C 250 d 2.1 Automatic | 58.9–62.8 | – | 46.1 | 76% | – |
| C 300 Automatic | 41.5–42.8 | 34.9 | 30.0 | 86%* | – |
| C 300 d 4Matic Automatic | 53.3 | 42.8 | – | – | – |
| C 300 d Automatic | 56.5 | 42.8 | 46.3 | 108%* | 42.0–54.0 |
| C 300 de Automatic | – | 235.4 | 65.5 | 28%* | 56.0–75.0 |
| C 300 e Automatic | – | 176.6 | – | – | – |
| C 300 h | 68.9–74.3 | – | 50.9 | 71% | – |
| C 350 e | 134.5 | – | 43.4 | 32% | – |
| Engine | Official (NEDC) | Official (WLTP) | Real MPG | % of official | Owners report |
|---|---|---|---|---|---|
| AMG C 43 | 29.7–35.3 | 29.1 | 26.4 | 91%* | 19.9–32.0 |
| AMG C 63 S | – | 25.7 | – | – | – |
| AMG C63 | 32.8 | – | 22.3 | 68% | 17.5–26.2 |
| AMG C63 S | 32.8 | – | 18.0 | 55% | – |
| C 180 | 44.8–48.7 | 39.2 | – | – | – |
| C 180 Automatic | 44.8 | – | – | – | – |
| C 200 1.5 4Matic Automatic | 42.8 | – | – | – | – |
| C 200 1.5 Automatic | 46.3 | – | 38.6 | 83% | 30.2–46.0 |
| C 200 2.0 4Matic Automatic | 40.9–42.2 | – | 24.7 | 59% | 24.4–25.0 |
| C 200 2.0 Automatic | 47.1–52.3 | – | 32.8 | 66% | 25.0–38.0 |
| C 200 EQ Boost | – | 41.5 | – | – | – |
| C 220 d 2.0 4Matic Automatic | 57.7 | – | – | – | – |
| C 220 d 2.0 Automatic | 53.3–61.4 | – | 54.6 | 95% | 45.0–60.1 |
| C 220 d 2.1 | 65.7–68.9 | – | 51.7 | 77% | 40.0–65.0 |
| C 220 d 2.1 4Matic Automatic | 58.9–61.4 | – | – | – | – |
| C 220 d 2.1 Automatic | 61.4–64.2 | – | 52.2 | 83% | 42.0–65.0 |
| C 220 d Automatic | – | 55.4 | 46.9 | 85%* | 46.0–47.8 |
| C 250 d 2.1 4Matic Automatic | 58.9–61.4 | – | 42.2 | 70% | 34.0–50.1 |
| C 250 d 2.1 Automatic | 61.4–64.2 | – | 46.8 | 75% | 37.0–55.0 |
| C 300 Automatic | 42.8–44.8 | – | 32.7 | 75% | 27.0–39.2 |
| C 300 d 4Matic Automatic | 54.3 | – | – | – | – |
| C 300 d Automatic | 57.7 | 49.6 | 52.6 | 106%* | 39.7–62.0 |
| C 300 EQ Boost | – | 39.8 | – | – | – |
| C63 | 28.0 | 25.0 | 18.5 | 74%* | 16.0–22.5 |
| Engine | Official (NEDC) | Official (WLTP) | Real MPG | % of official | Owners report |
|---|---|---|---|---|---|
| AMG C 43 | 29.1–34.0 | 28.0 | 24.8 | 89%* | 19.0–29.0 |
| AMG C 63 | 27.2–31.7 | 24.4 | – | – | – |
| AMG C 63 S | 27.2–31.7 | 24.4–25.0 | 24.7 | 100%* | 22.0–28.1 |
| C 180 | 43.5 | 35.3 | – | – | – |
| C 180 Automatic | 43.5 | – | – | – | – |
| C 200 1.5 4Matic Automatic | – | 40.9 | – | – | – |
| C 200 1.5 Automatic | 44.1 | – | 34.4 | 78% | 29.0–40.0 |
| C 200 2.0 | 46.3–47.1 | – | – | – | – |
| C 200 2.0 Automatic | 44.8–45.6 | – | 36.1 | 80% | 34.0–38.1 |
| C 220 d 2.0 4Matic Automatic | 54.3 | – | 39.0 | 72% | 33.0–45.0 |
| C 220 d 2.0 Automatic | 58.9 | – | – | – | – |
| C 220 d 2.1 | 62.8 | – | – | – | – |
| C 220 d 2.1 4Matic Automatic | 29.1–56.5 | – | 35.5 | 83% | 30.0–41.0 |
| C 220 d 2.1 Automatic | 57.7–61.4 | – | 49.9 | 84% | 43.0–60.0 |
| C 220 d Automatic | – | 52.3 | – | – | – |
| C 250 d 2.1 Automatic | 57.7 | – | – | – | – |
| C 250 d Automatic | 57.7–61.4 | – | 43.1 | 72% | 41.0–45.5 |
| C 300 Automatic | 40.9–42.2 | – | 29.3 | 71% | 28.0–31.0 |
| C 300 d Automatic | 54.3 | 48.7 | 41.1 | 84%* | 38.0–42.5 |
| C 300 EQ Boost | – | 37.2 | – | – | – |
| Engine | Official (NEDC) | Official (WLTP) | Real MPG | % of official | Owners report |
|---|---|---|---|---|---|
| C 200 Automatic | – | 44.1 | 38.7 | 88%* | – |
| C 220 d Automatic | – | 61.4 | 54.0 | 88%* | – |
| C 300 Automatic | – | 42.2 | – | – | – |
| C 300 d Automatic | – | 55.4 | – | – | – |
| C 300 e | – | 470.8 | – | – | – |
| C 43 MHEV AMG | – | 31.7 | – | – | – |
| C 63 S e PHEV AMG | – | 31.4–40.9 | – | – | – |
| Engine | Official (NEDC) | Official (WLTP) | Real MPG | % of official | Owners report |
|---|---|---|---|---|---|
| C 200 Automatic | – | 42.2 | – | – | – |
| C 220 d Automatic | – | 60.1 | 60.8 | 101%* | – |
| C 300 Automatic | – | 40.9 | 33.8 | 83%* | 33.1–34.5 |
| C 300 d Automatic | – | 54.3 | – | – | – |
| C 300 e | – | 403.6 | 35.8 | 9%* | – |
| C 43 MHEV AMG | – | 31.4 | – | – | – |
| C 63 S e PHEV AMG | – | 31.4–40.9 | – | – | – |
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 42.0 mpg across all Mercedes-Benz C-Class engines with data, about 84% 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.
The site closed in August 2026 and its Real MPG section went with it. This page is where the Mercedes-Benz C-Class figures now live: rebuilt from the archived dataset, with the official figures kept alongside, and reopened for new submissions.
Looking at a Mercedes-Benz C-Class right now? Check the advert before you go and see it.
If you used the Honest John Real MPG section before the site closed in 2026, this is where the Mercedes-Benz C-Class figures now live. The owner-reported averages above were rebuilt from the archived dataset (archived page, 2026-08) 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 C-Class running-cost sheet. These guides cover the checks that stop you buying the wrong one.