I am down to half of the tank after driving for 180 kilometers.

From the internet, the car is supposed to have a 44-liter capacity but 9 liters are the reserve. So doing the math, the car is consuming around 9 litres/100km which seems excessive for a 1.5 litre engine. I drive in a low-density town where the speed limit is 60 KM/hr, and there is rarely any form of start-stop traffic. It is hilly, sort of, you meet a couple of non-steep climbs here and there, but I doubt they are the reason behind all of this.

It is a Mazda 2 (2013) with an automatic transmission and a 1.5-litre engine. It had a previous accident history; therefore, it was cheap, and the mechanic I bought it from told me it was just body damage. None of the mechanical parts (engine bay) were affected and restored to an almost new condition. Which is in line with its history as it lists the accident as a rear collision.

The ball bearings on one of the rear wheels sound like they need replacement, but otherwise, I had no issues with the car. The engine sound, torque, and even AC work really well. The engine air filter looks almost like new. Should I be concerned?