The main difference between diesel and petrol engines is that petrol engines use spark plugs to ignite the air-fuel mixture, while diesel engines rely solely on heavily compressed air. … Therefore in diesel engines, air in cylinder would be very heavily compressed, typically to around 14 to 23 times its original volume.
What is the difference between a petrol and diesel engine?
The difference between petrol and diesel is found in the way that the combustion occurs. Whilst a petrol engine combines fuel with air before being ignited by spark plugs, in a diesel engine the air is compressed beforehand and then the fuel is injected.
Which engine is better petrol vs diesel?
Petrol vs diesel engine
|Parameters||Petrol engine||Diesel engine|
|Power||Lower than a diesel engine.||Higher than a petrol engine.|
|Fuel||High volatile fuels such as petrol.||Low volatile fuels such as diesel.|
|Application||Light vehicles such as two-wheelers and cars.||SUVs and heavy vehicles such as trucks and buses.|
Which is faster diesel or petrol?
Though the diesel variant has a higher torque than the petrol, it does so on a lower rpm due to which shifting is necessary sooner than that on the petrol. Thus the petrol produces more power and accelerates from 0 to 100 quicker.
Why is diesel cheaper than petrol?
The excise duty and the VAT (value added tax) structure had been lower on diesel. … Hike in duty on diesel has been much more than that of petrol, thus making taxes on the two fuels almost equal. Thus, with a higher base price of diesel, the price in the retail market is now getting ahead of the petrol prices.
Which engine has more life diesel or petrol?
Diesel engines do last longer than petrol ones. Diesel is a light oil and when burned and used as fuel by the vehicle it lubricates the parts of the engine. This prolongs the life of the engine. … While diesel engines typically last longer they are more costly to repair.
What are the disadvantages of diesel cars?
Cons of diesel cars
- Diesel cars tend to be more expensive to buy than similar petrol models.
- Diesel fuel usually costs more.
- Servicing can be more expensive, although you don’t need to do it as often.
- Insurance can be 10-15% higher. [ …
- Diesel cars produce a lot more NO2.
Is petrol car good for long drive?
If you want to keep a car for long and drive more than 80-100km a day, diesel can be a valid option. Otherwise, if your running is quite less and you don’t prefer keeping a car for more than 3-4 years, go for petrol.
Which is better Dzire petrol or diesel?
Which is better Dzire petrol or diesel? Petrol and Diesel fuel prices are almost same but you pay more for diesel car variant. … but if you take a test drive you will feel the difference of power and grunt, more torque and less gear shift in diesel engine as compared to a petrol engine.