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Common questions and answers about LPG and conversions.

An LPG conversion is a secondary fuel system for your vehicle that allows the vehicle to run on Liquefied Petroleum Gas, better known as LPG or Autogas. The primary fuel system (usually petrol) is always retained so the vehicle becomes dual or bi fuel, so you have the choice of running it on either fuel at the touch of a button.

Can my car be converted to LPG?

Most petrol engines including turbo charged and fuel injected engines can be converted.

How will I save money by converting my car to LPG?

Even though lpg has a lower calorific value than petrol, (you get slightly less miles per gallon), lpg costs about 50% less than petrol.  This is because the tax levels are much lower for lpg than for both diesel and unleaded, so it is still a far more cost effective way to run your car.  The tax break is due to government supporting evidence that lpg is a very clean burning fuel, more sustainable and better for the environment than other mainstream fuels.  You can calculate how much you will save per year by using our LPG savings calculator.

Why is LPG better for the environment?

Lpg is by far the most widely available environmentally friendly alternative fuel.  It is non-toxic and has no impact on soil, water and underground aquifers.  It also helps to improve the quality of indoor and outdoor air, as it produces substantially less particulate matter, Nitrogen oxide, Carbon monoxide, Hydrocarbons and CO2 emissions than diesel, petrol, oil, wood and coal.

What is LPG (Autogas)?

LPG means Liquid Petroleum Gas.  It is a combination of propane and butane molecules, along with trace amounts of other compounds.  At a normal temperature, lpg is a gas.  When subjected to modest pressure or cooling, it transforms into a liquid making it easy to transport and store.  Lpg is a naturally occurring by-product of natural gas extraction and crude oil refining.   In the past lpg was destroyed through venting or flaring, wasting the full potential of this exceptional energy source.

How safe is LPG?

Modern Lpg/Autogas engine systems are designed to be safe in use, safe in repair and safe in a vehicle accident.  Lpg has been used safely over the world for many decades and there are already over 200,000 lpg vehicles in the UK alone.  Crash and fire tests have proved that tanks fitted to the LPGA safety guidelines make the lpg fuel system safer than petrol.  This is due to the tank that the lpg is stored in being able to withstand a far greater impact.  Also lpg is fully contained under pressure in solid tanks in a sealed system, conventional petrol systems are far more prone to leaks and vapour escapes.

As an LPGA / UKLPG Approved Autogas Installer all AGS customers have the assurance of a safe and satisfactory installation backed by a Quality Assurance Programme and Consumer Code.

Where does the LPG tank go and how does the conversion work?

Please take a look at our diagram which show the conversion process and how the lpg system is fitted.  You can also see a range of vehicles that we have already converted in our conversion gallery.

Will it affect my car’s performance or damage the engine?

Running your car on Autogas will not damage the engine, quite the opposite in fact, as the fuel is a gas it mixes better with air than petrol, therefore the combustion is much smoother, and also cleaner.  Using Autogas reduces engine wear, oil and spark plugs will also last longer.  Converting to Autogas / Lpg can increase the power and performance of your car especially if it is a turbo model. However, generally there is a small loss in performance, but so small you won’t notice it while driving.

What happens if I run out of LPG or petrol?

AGS conversions are dual fuel so when the car runs out of lpg it will automatically switch to petrol.  This is hardly noticeable and causes no damage to your engine.  The car will normally start cold on petrol and then quickly switch over to gas when the engine is warm, it is therefore important to always have a little bit of petrol.

What happens if I get a puncture as I no longer have a spare wheel?

Most conversions put the lpg tank in the spare wheel well of the car so as not to reduce boot space. If you are unlucky enough to get a puncture we can supply fully approved tyre foam. This reflates the tyre and seals the puncture until you can get it properly repaired.

Where can I refuel at home and abroad?

There are approximately 1400 Autogas refuelling points throughout the UK with over 40 stations across Northern Ireland.  And if you are planning a trip abroad Lpg / Autogas is available in most countries across Europe.  Currently lpg vehicles are not permitted into the Channel Tunnel, they are however allowed on cross channel ferries.  UKLPG have lobbied for a change in Policy, but have been advised that as installation standards vary across Europe this is unlikely to change in the near future.
To find out where your nearest LPG filling station is take a look on our map.

Will an LPG conversion affect my insurance?

You should not have a problem with an lpg conversion affecting your insurance premium, some insurance companies even offer a lower rate for vehicles running on Autogas.  As an UKLPG Approved Autogas installer, AGS will issue you with a certificate of compliance and place your vehicles details on the UKLPG register – a requirement increasingly sought by insurance companies.  Only UKLPG Approved Autogas Installers can place vehicles on the UKLPG Vehicle Register.

Should I notify the DVLA?

You should notify DVLA that your vehicle has been converted to run on LPG as it is a mechanical change from when the vehicle was first registered. By registering the vehicle with DVLA as alternatively fuelled you may be entitled to a reduction in Vehicle Excise Duty (road tax).

Will I get a warranty?

All of our lpg conversions come with a minimum 2 year warranty.  We can offer extended warranties on certain conversions.

What about servicing?

We recommend that you service your lpg system approximately every 12,000 miles.  The service takes 30 minutes to an hour and we can do this while you wait.  Prices start from £45.

Will the conversion improve the resale value of my car?

In general a vehicle that has been converted to run on lpg will have a higher resale value than a similar model that has not been converted.  A good quality reliable system fitted with a certificate is a good selling point for any vehicle.  Selling your vehicle with a conversion will have the advantage of lower fuel costs, reduced maintenance and the environmental benefits, making it easier and quicker to sell.

How long does the conversion take?

The conversion will take 2-4 days depending on the vehicle type.  If you require a car then we can arrange car hire for you at a discounted rate, also Portadown Train Station is in close proximity to AGS.

Can an LPG system be removed?

It is possible to remove the lpg system from your car if you wish to do so at some point.  If you would like to know more about the process and cost, please get in contact with us for more information.