Readers on Amazon consider it readable at 7 - 9 Grade Level.
A popular method used by schools to measure a student reader’s ability is Lexile level or a Lexile Measure. The Lexile Level of Mortal Engines is 990L .
Readers of age 12 - 15 years will enjoy Mortal Engines .
In London, which is now a huge 7-tiered city comprised of metal, Tom, a lowly apprentice, saves the life of Thaddeus Valentine, a renowned architect, only to find himself left for dead in a sea of mud, in an epic story of intrigue, betrayal, and Municipal Darwinism. 19,000 first printing. Read more