In short, there isn’t a single miles-per-gallon figure for Honda’s 2.2‑litre diesels. The actual mpg depends on the specific engine variant, model and year, gearbox, and how you drive. Broadly speaking, the older 2.2 i‑CTDi tends to sit in the low‑to‑mid 40s mpg in combined driving, while the newer 2.2 i‑DTEC variants can achieve higher highway economy, often in the 50s to 60s mpg on official EU tests, with real‑world results typically a bit lower depending on conditions.
The two main 2.2 engine families
Honda’s 2.2‑liter diesels have evolved in two major generations. Understanding which one you own clarifies what mpg figure you should expect. The following overview uses European test cycles as a reference point. Note that US EPA figures aren’t generally published for these engines because they weren’t offered in most U.S. models.
- 2.2 i‑CTDi (older turbo diesel): used in earlier Accord and other European models; typical combined mpg generally in the low‑ to mid‑40s range on EU tests, with real‑world numbers influenced by transmission and tyres.
- 2.2 i‑DTEC (newer diesel): adopted in later Civic/CR‑V/Accord variants; often achieves higher EU combined figures, commonly cited in the mid‑50s to low‑60s mpg range on official tests, with highway figures higher and urban numbers lower depending on configuration.
These ranges are intended as a guide. The exact figure for your car will depend on the specific model, year, trim, and the test cycle used by the manufacturer.
How to find the exact mpg for your Honda 2.2 diesel
To know the precise miles‑per‑gallon for your vehicle, check authoritative sources and perform your own measurements. The steps below explain how to do that and what to consider.
- Identify the exact engine variant in your vehicle’s documentation or on the engine bay label (for example: 2.2 i‑CTDi or 2.2 i‑DTEC) and note the model year and transmission type.
- Consult official fuel economy figures from Honda’s regional websites or the European Union’s fuel‑economy databases for your vehicle and test cycle (EU tests such as NEDC/WLTP provide the official mpg figures).
- For real‑world numbers, perform a simple fill‑up method: fill the tank to the top, drive normally until near empty, refill and divide miles driven by gallons added. Do this over several fills for accuracy.
- Factor in conditions that affect mpg, such as driving style, speed, traffic, load, climate control use, tyre pressure, and maintenance (air filters, oil, and exhaust system integrity). These can swing mpg by 10% or more from official figures.
Practically, the best way to get a precise number is to look up the exact model/year and engine variant you own, then compare the official figure with your own real‑world measurements.
Summary
The Honda 2.2‑liter diesel family covers at least two generations, with mpg that varies by engine type, model, and year. If you specify the exact car (model, year, transmission, and engine), you’ll get a precise figure from official data and a closer estimate of what you’ll see in daily driving. In general terms, you can expect roughly mid‑40s mpg for older i‑CTDi vehicles and mid‑50s to low‑60s mpg for newer i‑DTEC variants in European tests, with real‑world results often below those figures depending on driving conditions.