Petrol or diesel? This is one of the most common questions that vehicle buyers have following the diesel engines emissions scandal. The type of engine that will suit you will -depend on your circumstances, budget, and preferences. The previous mindset about diesel that it is less refined -and cheaper to run is now outdated. This is because technology has cut the differences- between the two- fuels. In short, -diesel is not always the best- for economy -and petrol does not always offer the most fun.
When choosing a petrol vehicle and a diesel one, there are -three factors that must be considered. These factors are:
• Driving preference
• Running costs
Advances in engineering has now -blurred the line between diesel and petrol, both in refinement and performance. Diesel develops maximum- torque, which is the ‘shove’ that you require picking up speed, at lower engine revolutions. This allows you to change-up though the gears -earlier. This moderately narrow -power band can make- manual gear-changes an involving task. However, modern-day automatics work well with diesel -engines.
The diesel engines today can be smoother -than petrol, particularly the three- or two-cylinder petrol units which are a popular- choice for manufacturers- looking to boost fuel-efficiency. Good diesel is presently around 35 percent efficient, petrol is around 27 percent, but firms such as- Mazda are closing- the -gap by making petrol-engines with -diesel-like torque, and diesel-engines with a petrol-like response. The modern petrol -engines are becoming more efficient, lighter, and smaller, with no -loss of performance.
Running costs consist of all the non fuel -factors such as depreciation, purchase price, insurance, and servicing. Diesel-powered- cars- tend to be more- costly to buy- and service- than their _petrol counterparts, although the- ‘diesel premium’ decreases in- relative terms as vehicles get bigger.
The most significant, and perhaps a most over-looked factor in running _costs is time. Depreciation- is the leading cost of car ownership. Therefore, re-sale values play a big role in choosing whether a diesel or petrol car will be _more cost-effective generally. On the _upside, diesel is usually cheaper to insure and tax. It is also a fact that you will save money on diesel when you cover more miles.
For instance, the Fiat-500 diesel does approximately 14m.p.g. more -than its 1.2 petrol counterpart, but its _purchase price is £2400 _higher. On the economy alone, car owners would require covering more than _130,000 miles in the diesel- engines before the fuel-economy/purchase price-equation levels-out. Once servicing -costs are accounted for, the petrol vehicle builds its- advantage, ending- up more -than £900 cheaper to -run over 36,000 miles or three years.
British refineries have focused their efforts on making petrol engines and in the UK, diesel engines are noticeably dearer compared to other European -countries, where carbon dioxide-related tax -structures also add to diesel- appeal, as CO2 output is directly connected to fuel consumption.
A petrol car can deliver up to 30 percent less fuel-economy than a diesel equal, but it still -might turn out to be cheaper -to own over three- years. There is also a -possibility that -diesel will become more costly if negotiations to tax fuel -according to energy content become a reality (diesel contains approximately 10 percent more -energy than petrol).