The phrase "similar make" means that two or more things are from the same company or have similar characteristics.
Sentences with «similar make»
I've inspected other similar make / model cars and haven't seen melted lenses on them. (mechanics.stackexchange.com)
This may have fixed your vehicle's issues but it doesn't mean that all vehicles of similar make, model and year are suffering from the same problem (mechanics.stackexchange.com)
For the hatchback, I'd take a look on craigslist for similar make / models in your area with similar issues and see what people are asking for them. (mechanics.stackexchange.com)