Petrol or Diesel?

For an off- roader, a powerful engine is of less importance than one might think. The old Land Rovers had small engines, but their off-road reputation is enviable. This is because the engines, although small, could deliver their power and torque at very low rpm, and this is what is important when driving off-road. But what about petrol vs diesel engines?

Petrol Advantages:

• Quieter
• More powerful than similar sized diesel engine
• More mechanics understand petrol engines
• Easier roadside maintenance and repairs
• Less expensive to maintain, repair or overhaul.

Petrol Disadvantages:

• Develops maximum torque at a higher rpm
• Higher fuel consumption
• Non-availability of petrol in certain areas (especially unleaded)

Diesel Advantages:

• Torque characteristics - maximum torque at low rpm
• Excellent engine braking characteristics
• Normal electrical problems caused by wading are non-existent
• More economical - longer range
• More readily available in certain remote areas

Diesel Disadvantages:

• More noisy
• Less power than similar sized petrol engines
• Limited roadside maintenance and repairs
• Fewer mechanics understand diesel engines
• Expensive repairs and maintenance