This LRO reader emailed LRO.firstname.lastname@example.org seeking an explanation on an N/A Defender.
I’m thinking about buying a Defender. While I’m familiar with the concept of turbo diesels, I’ve seen a few diesels advertised as N/A.
What does this mean? Are these models as good as Tdis?
Nev Green, Colchester, Essex
N/A stands for naturally aspirated - air used in the combustion process is drawn into the engine by the action of the descending piston. A Tdi uses a turbo to increase the volume of air drawn into the engine. The turbo improves efficiency, power and economy. The N/A diesel engines are reliable but lack the oomph of Tdi units. Tdi engines are preferred over N/A units, and prices reflect this.
This workshop advice appeared in the Spring 2014 issue of LRO. Back issues are available to download on digital devices here.