* Specific engine: Dodge offered several diesel engines in 2007 (e.g., in the Ram 2500/3500), each with different fuel efficiency. A 5.9L Cummins will get different mileage than a smaller engine.
* Vehicle configuration: A pickup truck will get different MPG than a van. A heavier-duty truck with more towing capacity will get worse mileage than a lighter one.
* Driving habits: Aggressive acceleration, high speeds, and frequent idling all significantly reduce fuel economy.
* Maintenance: Proper maintenance (including tire pressure) impacts MPG.
* Terrain and conditions: Driving in mountainous areas or in severe weather will lower fuel economy.
EPA estimates provide a general idea, but real-world MPG will often vary. To find a more accurate "true" MPG for a *specific* 2007 Dodge diesel, you'd need to:
* Consult the original EPA fuel economy sticker: This sticker should be in the vehicle or available online if you know the exact model and trim. Keep in mind these are estimates.
* Check online forums: Owners of the specific 2007 Dodge diesel model often share their real-world MPG experiences on forums. This is a good source, but remember driving conditions vary.
* Track your own fuel economy: The most reliable way to find the true MPG is to meticulously track your fuel fill-ups and mileage over several tanks.
In short, you need to be more specific about the 2007 Dodge diesel model to get a better answer.
