The simple answer is that your car failed because it did not meet one or more of the required standards for passing an inspection.
There are a number of reasons why a car might not meet the standards including:
-The engine is not running properly
-There are leaks in the engine
-The tires are not in good condition
-The brakes are not working properly
-The suspension is not working properly
-The body of the car is in poor condition
-The interior of the car is in poor condition
If any of these issues are not fixed your car will not pass inspection.
Why would a car not have a catalytic converter?
Answer: The car is too old and predates the emission standard that required them.
Why would a car not have a functioning horn?
Answer: The horn button is broken the fuse is blown or the horn itself is damaged.
Why would a car not have a spare tire?
Answer: The spare tire is missing the car does not have a spare tire or the spare tire is flat.
Why would a car not have a working gas gauge?
Answer: The gas gauge is broken the sending unit is not working or there is a leak in the fuel line.
Why would a car not have a valid inspection sticker?
Answer: The car has failed inspection the car has not been inspected or the sticker is expired.
Why would a car not have a working speedometer?
Answer: The speedometer is broken the cable is disconnected or the speed sensor is not working.
Why would a car not have a working odometer?
Answer: The odometer is broken the cable is disconnected or the speed sensor is not working.
Why would a car not have passing emissions?
Answer: The car is too old the car has a tampering device or the car has been modified.
Why would a car not have a valid registration?
Answer: The registration is expired the car is not registered or the registration is suspended.
Why would a car not have valid insurance?
Answer: The insurance is expired the car is not insured or the insurance is suspended.
Why would a car not have a working brake light?
Answer: The brake light is burned out the brake light switch is broken or there is a problem with the wiring.
Why would a car not have a working headlight?
Answer: The headlight is burned out the headlight switch is broken or there is a problem with the wiring.
Why would a car not have a working taillight?
Answer: The taillight is burned out the taillight switch is broken or there is a problem with the wiring.
Why would a car not have a working turn signal?
Answer: The turn signal bulb is burned out the turn signal switch is broken or there is a problem with the wiring.
Why would a car not have a working windshield wiper?
Answer: The windshield wiper motor is broken the windshield wiper switch is broken or there is a problem with the wiring.