Mpg vs age/mileage
Discussion
Hello forummers,
Its been quite a while since I've had a new/nearly new vehicle: What people's thoughts on how we should expect the mpg returned by a modern diesel engine to vary over its life?
- Should it stay pretty constant?
- Highest when new, then gradually decline?
- Lower to start with, then improve over x-thousand miles 'running in'? (is that still a thing?!)
- something else entirely?
Interested to hear thoughts,
Thanks
Its been quite a while since I've had a new/nearly new vehicle: What people's thoughts on how we should expect the mpg returned by a modern diesel engine to vary over its life?
- Should it stay pretty constant?
- Highest when new, then gradually decline?
- Lower to start with, then improve over x-thousand miles 'running in'? (is that still a thing?!)
- something else entirely?
Interested to hear thoughts,
Thanks
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