If you have shopped for a second-hand vehicle you've probably heard about the supposed benefits of a ‘country car’ over a city one.
The idea is that, even though a country car might have higher mileage, its engine will have less wear and tear because it has rarely been in stop/start traffic and its body will be less prone to rust because it has never been near the sea.
Go back 30 or 40 years and you’ll find some evidence to support these claims. Short trips, where the engine never reached optimum operating temperature, typified the routine of many city cars, whereas a country car was often up and running at 100km/h for long periods, reducing cold-start wear.
Another factor was the imprecise way fuel was metered. Fuel injectors, which are a more precise means of delivering petrol into the engine, replaced carburettors in the late 1980s. By comparison, the carburettor was rudimentary and excess fuel often found its way into the engine, diluting engine oil and hastening engine wear.