Which is more efficient petrol or diesel engine?

Per litre, diesel contains more energy than petrol and the vehicle’s engine combustion process is more efficient, adding up to higher fuel efficiency and lower CO2 emissions when using diesel.

Why diesel engines are more efficient than petrol?

Diesel engines are more efficient than gasoline engines for two reasons: (i) higher cylinder pressures and corresponding higher temperatures lead to improved thermal efficiency for the diesel engine; (ii) the air throttling required to control the gasoline engine power output reduces engine efficiency and is not used …

Which is better petrol and diesel engine?

Diesel cars pull off better mileage when compared to petrol cars. This is because diesel engines don’t require a spark plug. The resale value of diesel cars is quite higher than petrol cars. Also, diesel cars depreciate less and slower.

What are the disadvantages of diesel engines?

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.

What are the problems with diesel engines?

These are eight of the most common diesel problems:

  • Difficult start. As a diesel owner, you know that they may crank a bit when started. …
  • Lack of power. …
  • Contaminated fuel. …
  • Faulty lead/acid storage battery. …
  • Black exhaust. …
  • Oil oxidation. …
  • Incorrect weight viscosity. …
  • An overabundance of noise.
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Which car gives best mileage?

2.46 Crore. The most popular Top Mileage Cars include Volvo XC90 (46 kmpl), BMW 7 Series (39 kmpl) and Hyundai Grand i10 Nios (26 kmpl). The top brands that produce best mileage cars are.

Top Mileage Cars in India 2021.

Model Price Mileage
Hyundai Aura Rs. 5.99 – 9.36 Lakh 25 kmpl
Hyundai i20 Rs. 6.91 – 11.40 Lakh 25 kmpl

What are the disadvantages of diesel and petrol?

Diesel engines are considered to be slightly underpowered and sloppier than a petrol version. Petrol version does not command a good resale value in the used car marke. Diesel engines often run into compliance issues with environmental norms. Petrol versions haven’t been much of a success with bigger vehicles.

Is a diesel car OK for city driving?

Diesel Rule 3: Don’t buy diesels for low mileage or inner city life. Also known as “diesel car city driving”, you want to avoid doing this. It’s well known by petrolheads, but always worth explaining why. Driving at low speeds and short distances clogs up your Diesel Particulate Filter (DPF) quickly.

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