6,031 Diesel cars under £40000 for sale

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Our new heyAI search is still learning, and getting smarter everyday to bring you exactly what you're looking for.

For best results, try using clear, specific phrases like this:

• Make and model (VW Golf GTI)
• Colour and body type (e.g. SUV, hatchback)
• Fuel type (petrol, diesel, electric, hybrid)
• Age of the vehicle (less than 3 years old)
• Mileage (less than 10k miles)
• Your budget (total/monthly)

We're constantly improving to make your car search easier. Thanks for your patience!