The official figure is what a Vauxhall Insignia 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 |
|---|---|---|---|---|---|
| 1.4i Turbo | 51.4–54.3 | – | 36.9 | 70% | 29.0–45.0 |
| 1.6 CDTi 136 | 64.2 | – | 48.9 | 76% | 37.0–59.0 |
| 1.6 CDTi 136 Automatic | 54.3–56.5 | – | 46.1 | 83% | 36.6–55.0 |
| 1.6 CDTi 136 ecoFLEX | 64.2–72.4 | – | 50.4 | 74% | 39.8–62.0 |
| 1.6 CDTi 136 ecoFLEX Automatic | 54.3 | – | 47.4 | 87% | 38.0–54.4 |
| 1.6 SIDI Turbo | 45.6 | – | 36.2 | 79% | 33.3–38.7 |
| 1.6 SIDI Turbo Automatic | 40.7 | – | 38.2 | 94% | 35.0–43.5 |
| 1.6i Turbo | 36.7–40.4 | – | 30.3 | 79% | 26.4–35.0 |
| 1.8i | 37.2–39.2 | – | 29.9 | 78% | 22.5–37.2 |
| 2.0 CDTi | 48.7–62.8 | – | 45.1 | 81% | 34.9–55.0 |
| 2.0 CDTi 120 ecoFLEX | 76.3 | – | 52.9 | 69% | 40.0–65.0 |
| 2.0 CDTi 130 | 62.8 | – | 44.5 | 71% | 33.0–53.0 |
| 2.0 CDTi 130 Automatic | 53.3 | – | 43.2 | 81% | 34.0–53.8 |
| 2.0 CDTi 140 | 62.8 | – | 51.5 | 82% | 43.0–61.0 |
| 2.0 CDTi 160 | 42.2–58.9 | – | 43.3 | 86% | 32.9–53.3 |
| 2.0 CDTi 160 4x4 | 50.4 | – | 38.0 | 75% | 29.0–42.0 |
| 2.0 CDTi 160 4x4 Automatic | 44.1 | – | 37.5 | 85% | 37.0–38.0 |
| 2.0 CDTi 160 Automatic | 49.6 | – | 39.1 | 79% | 29.0–47.5 |
| 2.0 CDTi 160 ecoFLEX | 57.6–67.3 | – | 47.7 | 76% | 35.8–59.0 |
| 2.0 CDTi 163 | 65.7 | – | 48.0 | 73% | 39.4–55.0 |
| 2.0 CDTi 163 Automatic | 53.3 | – | 40.9 | 77% | 34.0–49.6 |
| 2.0 CDTi 163 ecoFLEX | 65.7 | – | 48.2 | 73% | 37.9–57.5 |
| 2.0 CDTi 170 | 62.8 | – | 44.6 | 71% | 33.3–53.0 |
| 2.0 CDTi 170 Automatic | 50.4–52.3 | – | 40.0 | 78% | 31.0–47.0 |
| 2.0 CDTi 170 ecoFLEX | 62.8–65.7 | – | 46.3 | 72% | 35.0–57.0 |
| 2.0 CDTi 195 | 50.4–60.1 | – | 38.4 | 69% | 34.0–46.0 |
| 2.0 CDTi 195 4x4 | 51.4 | – | 36.6 | 71% | 32.0–45.0 |
| 2.0 CDTi Automatic | 47.9–52.3 | – | 41.2 | 82% | 33.6–49.5 |
| 2.0 CDTi ecoFLEX | 54.3–67.3 | – | 49.5 | 81% | 38.0–62.0 |
| 2.0 SIDI Turbo | 39.2 | – | 33.0 | 84% | – |
| 2.0 SIDI Turbo Automatic | 35.8 | – | 29.4 | 82% | 28.0–30.1 |
| 2.0i Turbo | 29.4–39.2 | – | 24.6 | 72% | 20.5–31.0 |
| 2.0i Turbo (start/stop) | 37.2 | – | 17.2 | 46% | – |
| 2.0i Turbo 4x4 | 28.8–31.7 | – | 20.9 | 69% | 19.5–23.4 |
| 2.0i Turbo 4x4 Automatic | 30.4 | – | – | – | – |
| 2.0i Turbo Automatic | 31.0–35.8 | – | 20.1 | 60% | 15.4–24.8 |
| 2.8i Turbo VXR | 26.6 | – | 29.4 | 110% | 28.2–30.5 |
| 2.8i Turbo VXR Automatic | 26.4 | – | – | – | – |
| 2.8i V6 Turbo 4x4 | 25.7 | – | 26.0 | 101% | 24.3–28.2 |
| VXR | 26.4–26.6 | – | 23.8 | 90% | 19.2–26.6 |
| Engine | Official (NEDC) | Official (WLTP) | Real MPG | % of official | Owners report |
|---|---|---|---|---|---|
| 1.4 Turbo | 50.4 | – | 37.3 | 74% | 36.5–38.0 |
| 1.4i Turbo | 48.7–50.4 | – | 39.5 | 80% | 33.0–44.0 |
| 1.6 CDTi 136 | 61.4–68.9 | – | 52.3 | 80% | 45.5–56.4 |
| 1.6 CDTi 136 Automatic | 54.3–55.4 | – | 35.3 | 64% | 33.3–37.0 |
| 1.6 CDTi 136 ecoFLEX | 61.4–65.7 | – | 46.5 | 73% | 36.0–53.0 |
| 1.6 SIDI Turbo | 43.5 | – | 36.7 | 84% | 30.0–43.4 |
| 1.6 SIDI Turbo Automatic | 39.2 | – | – | – | – |
| 1.6i Turbo | 35.8–39.2 | – | – | – | – |
| 1.8i | 36.2 | – | 30.0 | 83% | 24.5–33.6 |
| 2.0 CDTi | 47.1–60.1 | – | 45.4 | 85% | 37.0–55.0 |
| 2.0 CDTi 120 ecoFLEX | 72.4 | – | 52.6 | 73% | 40.7–62.0 |
| 2.0 CDTi 130 | 60.1 | – | 44.6 | 74% | 34.1–51.0 |
| 2.0 CDTi 140 ecoFLEX | 72.4 | – | 50.0 | 69% | 42.0–59.5 |
| 2.0 CDTi 160 | 41.5–55.4 | – | 44.3 | 91% | 35.0–52.0 |
| 2.0 CDTi 160 4x4 | 50.4 | – | 42.7 | 85% | 42.4–43.0 |
| 2.0 CDTi 160 4x4 Automatic | 42.8 | – | – | – | – |
| 2.0 CDTi 160 Automatic | 47.9 | – | 40.2 | 84% | 31.3–49.5 |
| 2.0 CDTi 160 ecoFLEX | 55.4–62.8 | – | 45.8 | 78% | 36.5–54.5 |
| 2.0 CDTi 163 | 62.8 | – | 47.7 | 76% | 45.0–50.0 |
| 2.0 CDTi 163 Automatic | 52.3 | – | 42.2 | 81% | 37.8–47.2 |
| 2.0 CDTi 163 ecoFLEX | 62.8 | – | 49.0 | 78% | 39.0–53.1 |
| 2.0 CDTi 170 | 60.1–62.8 | – | 44.0 | 72% | 39.0–52.0 |
| 2.0 CDTi 170 Automatic | 49.6–51.4 | – | 41.4 | 82% | 38.0–43.4 |
| 2.0 CDTi 170 ecoFLEX | 60.1–62.8 | – | 49.3 | 80% | 42.5–60.1 |
| 2.0 CDTi 195 | 48.7–57.6 | – | 36.8 | 69% | 32.0–40.0 |
| 2.0 CDTi 195 4x4 | 50.4 | – | 37.0 | 73% | – |
| 2.0 CDTi Automatic | 46.3 | – | 37.7 | 82% | 34.4–43.6 |
| 2.0 CDTi ecoFLEX | 53.3–62.8 | – | 47.6 | 82% | 43.9–55.0 |
| 2.0 SIDI Turbo | 38.2 | – | – | – | – |
| 2.0 SIDI Turbo Automatic | 34.9 | – | – | – | – |
| 2.0i Turbo | 29.1–38.2 | – | – | – | – |
| 2.0i Turbo (start/stop) | 36.2 | – | – | – | – |
| 2.0i Turbo 4x4 | 28.5–31.0 | – | – | – | – |
| 2.0i Turbo 4x4 Automatic | 29.7 | – | – | – | – |
| 2.0i Turbo Automatic | 30.7–31.7 | – | – | – | – |
| 2.8i Turbo VXR | 25.9 | – | – | – | – |
| 2.8i Turbo VXR Automatic | 25.7 | – | 23.5 | 91% | – |
| 2.8i V6 Turbo 4x4 | 25.0 | – | – | – | – |
| 2.8i V6 Turbo 4x4 Automatic | 25.0 | – | – | – | – |
| Country Tourer 2.0 CDTi 163 Automatic | 45.6–52.3 | – | – | – | – |
| Country Tourer 2.0 CDTi 163 Automatic 4X4 | 45.6 | – | – | – | – |
| Country Tourer 2.0 CDTi 170 | 60.1 | – | – | – | – |
| Country Tourer 2.0 CDTi 195 4x4 | 42.8 | – | – | – | – |
| Country Tourer 2.0 CDTi 195 Automatic | 42.8 | – | – | – | – |
| VXR | 25.7–25.9 | – | – | – | – |
| Engine | Official (NEDC) | Official (WLTP) | Real MPG | % of official | Owners report |
|---|---|---|---|---|---|
| 1.5 Turbo 165 | 47.1 | – | 34.9 | 74% | 28.0–42.0 |
| 1.5 Turbo 165 Automatic | 46.3 | – | 27.5 | 59% | – |
| 1.5 Turbo D | – | 60.1–61.4 | 49.5 | 81%* | – |
| 1.5 Turbo D Automatic | – | 56.5 | – | – | – |
| 1.5T 140 Ecotec | 47.6 | – | – | – | – |
| 1.5T 165 | 47.1 | – | 33.8 | 72% | – |
| 1.6 Turbo 200 | 44.8 | – | 27.3 | 61% | – |
| 1.6 Turbo 200 Automatic | – | 39.2 | – | – | – |
| 1.6 Turbo D 110 | 64.2 | – | 56.6 | 88% | 47.6–65.0 |
| 1.6 Turbo D 136 | 61.4–64.2 | – | 54.2 | 86% | – |
| 2.0 Turbo 200 Automatic | – | 37.7–38.2 | – | – | – |
| 2.0 Turbo 230 Automatic | – | 30.3–35.8 | – | – | – |
| 2.0 Turbo 260 4x4 | 32.8 | – | 21.5 | 66% | – |
| 2.0 Turbo D | 54.3 | – | 39.8 | 73% | 35.0–44.0 |
| 2.0 Turbo D 170 | 53.3 | – | 40.7 | 76% | 33.0–52.0 |
| 2.0 Turbo D 170 Automatic | 51.4 | – | 38.8 | 75% | – |
| 2.0 Turbo D 174 | – | 60.1–61.4 | – | – | – |
| 2.0 Turbo D 174 Automatic | – | 56.5 | – | – | – |
| 2.0 Turbo D Automatic | 39.8–51.4 | – | – | – | – |
| Engine | Official (NEDC) | Official (WLTP) | Real MPG | % of official | Owners report |
|---|---|---|---|---|---|
| 1.5 Turbo | 46.3 | – | – | – | – |
| 1.5 Turbo 140 | 47.1 | – | – | – | – |
| 1.5 Turbo 165 | 46.3 | – | 33.7 | 73% | 29.0–38.3 |
| 1.5 Turbo 165 Automatic | 45.6 | – | – | – | – |
| 1.6 Turbo 200 | 42.8 | – | – | – | – |
| 1.6 Turbo 200 Automatic | – | 38.7 | – | – | – |
| 1.6 Turbo D | 58.9–61.4 | – | – | – | – |
| 1.6 Turbo D 110 | 61.4–65.7 | – | 55.2 | 87% | 47.9–64.0 |
| 1.6 Turbo D 136 | 58.9–62.8 | – | 50.6 | 83% | 44.6–57.2 |
| 1.6 Turbo D 136 Automatic | 53.3–58.9 | – | 54.5 | 97% | 52.0–57.0 |
| 1.6 Turbo D Automatic | 53.3 | – | – | – | – |
| 2.0 Turbo 170 D | 53.3 | 45.6–50.4 | – | – | – |
| 2.0 Turbo 260 4x4 | 32.5 | – | – | – | – |
| 2.0 Turbo D | 53.3 | – | – | – | – |
| 2.0 Turbo D 170 | 51.4 | – | 45.1 | 88% | 34.6–56.3 |
| 2.0 Turbo D 170 Automatic | 47.1 | – | 31.3 | 67% | 26.0–37.0 |
| 2.0 Turbo D Automatic | 39.8–47.1 | – | 36.0 | 83% | 29.0–43.0 |
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 43.4 mpg across all Vauxhall Insignia engines with data, about 78% 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 Vauxhall Insignia 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 Vauxhall Insignia figures now live. The owner-reported averages above were rebuilt from the archived Honest John 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 Vauxhall Insignia running-cost sheet. These guides cover the checks that stop you buying the wrong one.