For the price of a used car - does it make a difference what
percentage of "miles on the clock" come from urban traffic and from
non-urban traffic?

I've never heard of that being a factor directly.  Probably because
there is no way of knowing (as a buyer) how many miles were put on the
car in the city.

But the value of a used car does depend on how it drives.  Cars with
alot of city miles tend to feel rougher, don't accellerate as
smoothly, have more rattles...  this all makes the car feel older to
the buyer and are a sign that the car has fewer miles left in its
life.

When you look up the blue book on a used car there is NOT a section
with "type of miles driven".  Car's worth are based on miles driven,
options, condition.

Hi,

Price of used Cars depends upon following things:

1. Paint is original or not
2. Car is fully painted including Roof or only sides are painted
3. Car is Accidental or not
4. Number of Miles shown in the Speedometer. (Though in some cases
these are not actual but still you get some idea)
5. Year of Purchase and Model of the Car
6. Number of Owners (It is always better to buy a single hand Car
having number of owners not more then 1)
7. Conditions of Tyres
8. Condition of Engine (If engine is smoky or giving black smoke when
given accelerator in Neutral Gear then it is for sure that life is
Engine is not very long it can go any time)
8. Conditions of Axles (Whether original or repaired)
9. Condition of appraines of the Car whether repaired of original.
10. Chasis is rusted or not

All these counts when a costing of Used Car is done. Car driven in
urban traffic or non-urban traffic doesn't makes much difference but
yes the difference which makes is in which area Car is mostly driven.
If the Car is driven maximum in the area where road conditions are not
very good then it is going to affect the life of Engine, Tyres, Axles
and Chasis or the Car.

Hope this gives you the answer to your question.

Regards,
Ashish

---
Dr. Ashish Kumar Sabharwal
GM IT 
Samdisha Software Research & Development Center Pvt. Ltd.
www.samdisha.com