Diesel vehicles are here to stay for many more years, and despite their bad press and the knowledge that manufacturing of new diesels will end in 2035, many drivers continue to choose diesel vehicles over petrol and electric.

Diesel vehicles are more fuel efficient, great for long-distance driving and perform well carrying heavy loads or towing. If you own or are about to purchase a diesel vehicle it is useful to know how to maintain your vehicle to keep it running more efficiently for longer.


The number one rule is to never let a diesel engine run dry as this can lead to several problems including the rusting of the tank.

Filling your vehicle up with good quality fuel can save you money in the long run as cheaper diesel will not protect your engine parts as well. In winter it is better to fill the whole tank with fuel as cold conditions can lead to ice or condensation in the tank which can contaminate your fuel.


It is essential to have your vehicle serviced annually or when the vehicle reaches the manufacturer’s recommended mileage, whichever comes first. During the service the oil will be changed, this lubricates the engine and prevents damage to the parts allowing everything to run smoothly. If your vehicle carries heavy loads often or tows a caravan it may be necessary to change the oil more frequently, consult your mechanic for more information.

Fuel Filters

Fuel filters keep the fuel clean and aid the performance of the engine. Filters will be checked at your annual service and should be replaced if damaged or dirty, how often they need replacing varies according to vehicle model and age. Running your vehicle with blocked and dirty filters puts more strain on your engine and compromises parts.

Engine Coolant

Engine coolant should be checked regularly, it keeps the engine from overheating, protects parts and helps it to run efficiently. In winter it prevents parts freezing which can lead to breakdowns and hefty repair bills.

Diesel Particulate Filter

The DPF (Diesel Particulate Filter) removes soot from the exhaust and reduces emissions by filtering out the damaging particles that pollute the environment.

The DPF can clean itself by a process called regeneration, it can only perform this process if it is driven regularly at a higher speed, for instance on a dual carriageway or motorway and for a greater distance. Regeneration is possible because the exhaust gets hotter and therefore burns off the soot, ash can however be left behind making the filter less efficient. If a vehicle is used predominately for shorter stop-start journeys, the filter is likely to become dirty and blocked, which can affect the car’s performance and fuel efficiency. 

It is not necessary to replace the DPF, which can be costly. At UKDPF we provide a cleaning and repair service for DPF filters. One of our specialist mobile engineers will visit you and run a diagnostic check to determine the health of your DPF, then provide you with a free no-obligation quote for the best-suited cleaning or repair package for the condition of your filter.

Our cleaning packages start from as little as £199, so if your DPF warning light is flashing on your dashboard, your fuel economy has dropped, or your vehicle has suddenly gone into limp mode call us today on 0330 133 2366.

Warm Up & Cool Down

When first getting into your car in the morning, allow it to warm up a little before you start your journey. When setting off keep your speed and revs moderate, and try to keep your RPM in the middle until the engine has warmed up sufficiently.

When arriving at a destination it is advisable to allow your engine to cool down for about a minute before turning off the ignition, longer if you have travelled a greater distance. Both warming up and cooling down your vehicle in this way will help your engine last longer with perhaps fewer parts needing replacing.

Diesel cars are reliable and economical, they are easy to maintain and if they are looked after will last for many years and cover many miles.