Which are more polluting: diesel engines or petrol engines? - Quora
Air pollution: Are diesel cars always the biggest health hazard? - BBC News
Four more carmakers join diesel emissions row | Pollution | The Guardian
What is the difference in pollution in the case of diesel and petrol engines ?
Diesel cars are 'more polluting' than thought, study finds | Financial Times
Do Diesel Engines Take Longer to Warm Up Than Gas Engines? – Car Buying and Selling
Air pollution: Are diesel cars always the biggest health hazard? - BBC News
Diesel vs Petrol - Who Wins? | CarsGuide
How do diesel engines work? - Explain that Stuff
Do Diesel Engines Produce Less CO2 Than Regular Engines? | Sierra Club
How to improve emissions caused by older diesel cars
Diesel Or Petrol Engines: Which Pollutes More? A Complex Question
Under the skin: Why diesel engines will always be more efficient than petrol | Autocar
The death of diesel: has the one-time wonder fuel become the new asbestos? | Cities | The Guardian
Under the skin: Why diesel engines will always be more efficient than petrol | Autocar
How to improve emissions caused by older diesel cars
Diesel exhaust - Wikipedia
Why Do Diesel Engines Produce So Much Torque?
Why did Diesel replace Steam power? - Bressingham Steam & Gardens
Debunking Five Common Diesel Engine Myths - PassageMaker
Fact Check: are diesel cars really more polluting than petrol cars?
What is Clean Diesel? | Diesel Technology Forum
Diesel vs Gas Emissions: Why Diesel Is Better for the Environment – Diesel Power Gear
What Are Diesel Emissions
Diesel Emissions Versus Gasoline: Which Fossil Fuel Pollutes More?
