Haynes Guides & Blogs

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Explore expert tips and tutorials on cars, bikes and more, from everyday maintenance and DIY repairs to common problem guides and real-life repair stories that inspire you to take on your own projects.

Best OBD Scanner 2025: the best fault code readers tested

What's an OBD reader and why should you buy one? We've reviewed eight OBD scanners to see which offers the...

    
            Advice
          
          How to polish a car
        
    Read more from How to polish a car
  
            Home Mechanics Guide
          
          What is primer paint (and how to apply it to your car)
        
    Read more from What is primer paint (and how to apply it to your car)
  
            Advice
          
          A short history of the Ford Transit
        
    Read more from A short history of the Ford Transit
  
            Routine Maintenance
          
          How to check and replace your wiper blades
        
    Read more from How to check and replace your wiper blades
  
            Advice
          
          A short history of the Volvo 700
        
    Read more from A short history of the Volvo 700
  
            Advice
          
          10 reasons you should buy an old car
        
    Read more from 10 reasons you should buy an old car
  
            Advice
          
          When is the best time to buy a car?
        
    Read more from When is the best time to buy a car?
  
            Advice
          
          How to give your car a basic inspection
        
    Read more from How to give your car a basic inspection
  
            Advice
          
          A short history of the Porsche 914
        
    Read more from A short history of the Porsche 914
  
            Advice
          
          What is your car’s ignition system (and how does it work)
        
    Read more from What is your car’s ignition system (and how does it work)
  
            Advice
          
          A short history of the BMW 2002
        
    Read more from A short history of the BMW 2002
  
            Advice
          
          How to adjust your headlight aim in an emergency
        
    Read more from How to adjust your headlight aim in an emergency
  
            Home Mechanics Guide
          
          Common hazards of car repair (and how to avoid them)
        
    Read more from Common hazards of car repair (and how to avoid them)
  
            Home Mechanics Guide
          
          How to fix a deep scratch on your car
        
    Read more from How to fix a deep scratch on your car
  
            Advice
          
          What is a four stroke engine?
        
    Read more from What is a four stroke engine?
  
            Advice
          
          A short history of the VW Golf Mark I
        
    Read more from A short history of the VW Golf Mark I
  
            Advice
          
          A short history of the Ford Mustang Mark II
        
    Read more from A short history of the Ford Mustang Mark II
  
            Advice
          
          How to jumpstart a car battery
        
    Read more from How to jumpstart a car battery
  
            Routine Maintenance
          
          10 common breakdown causes
        
    Read more from 10 common breakdown causes
  
            Advice
          
          What is horsepower and what does it measure?
        
    Read more from What is horsepower and what does it measure?
  
            Advice
          
          8 things that could fall off your car tomorrow
        
    Read more from 8 things that could fall off your car tomorrow
  
            Advice
          
          What does a car’s auxiliary belt do?
        
    Read more from What does a car’s auxiliary belt do?