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The Mercury Cars Guide : December 5th 2009
4--- Classifieds 62 300 400 • carsguide.com.au Saturday, December 5, 2009 Keeping cool can keep costs down COSTLY: Open car windows and air-conditioning are a costly combination. Driving with the windows down in hot weather can be adding hundreds of dollars to your annual fuel bill. Paul Gover reports A car uses less fuel to run an air-conditioning system than it will use due to the aerodynamic drag on a vehicle when its windows are open' T HE extra drag caused by open windows is a killer for fuel economy as modern cars operate more ef- ficiently with the air-conditioning working for cabin comfort. Open windows can be as bad as running with a roof rack --- another overlooked cause of poor economy during summer holiday runs. ''A car uses less fuel to run an air- conditioning sys- tem than it will use due to the aerodynamic drag on a vehicle when its windows are open,'' says James Bertrand, who heads the thermal systems division at Delphi Corpor- ation, one of the world's largest automotive sup- pliers. ''It is often more fuel efficient to drive with the air conditioning on than with the aircon off and the windows rolled down, particularly when driving on the highway.'' Delphi admits an air-conditioning system increases the load on an engine, but the latest designs of pumps are far more efficient and effective than aircon in the early days. American testing shows aircon can account for about five per cent of a car's annual fuel bill, but Delphi says modern energy-efficient systems can halve the running costs. It has three big tips to maximise the effectiveness of aircon: opening win- dows to vent hot air before driving, using the recirculation system to improve cold-air flow and setting the temperature to fully cold and using the fan to regu- late the airflow. ''These simple steps allow the car air and seats to be cooler which helps the air conditioning provide cooling comfort faster and save fuel at the same time,'' says Bertrand. He says it is important to purge hot air if a vehicle has been parked in the sun, before closing the windows to let the aircon go to work. Then, hitting the ''recirc'' button --- or ''max'' on some cars --- improves the effectiveness of a system because it is recirculating air which is already cooler than ambient. Finally, a manual aircon system will run best on the fully cold setting to get maximum cooling. The blower fan is the best way to regulate the airflow. Delphi says aircon systems need to be monitored and should be checked for leaks if there is any loss of efficiency, while refrigerant needs to be topped-up because of losses through hoses over the years. Also, newer vehicles have air filters which sometimes need cleaning. Cool facts 1 The first modern air-conditioning system is credited to Willis Haviland Carrier, who devel- oped a system in Buffalo, New York in 1902. 2 The term air-conditioning was first coined by Stuart Cramer in 1906. 3 Freon, the gas most used in air-conditioning, was created by Thomas Midgley in 1928. 4 Packard was the first carmaker to instal automotive air-conditioners, in 1939. They cost $US274 and filled the whole boot space, pumping cool air through the rear parcel shelf. 5 General Motors fitted the first front-mounted aircon system as an option on its V8-powered Chevrolet and Pontiac models in 1954. Conditions: All cars must be ordered and delivered between 1st October and 31st December 2009. Offer valid at participating dealers on existing dealer stock while stocks last. Offers exclude fleet, rental and govt. buyers and vehicles used for commercial purposes. Hyundai reserves the right to change, supersede or extend these offers. The 5 Year/ unlimited kilometre warranty is only applicable to vehicles used for private and domestic use and is not applicable for vehicles used for certain high mileage commercial purposes i.e. courier, security and rental cars. 1. 2008 Australia s Best Mid Size Car under $28,000 awarded by Australia s Best Cars to i30 SX . 2. Most Economical Small Car to Own and Run 2009 awarded by RACT to i30 petrol. 3. 2009 RACT Operating Cost Survey for Getz 1.4 S. 4. 2009 RACT Operating Cost Survey for Tucson City. iPod is a registered trademark of Apple Computer Inc., registered in the U.S. and other countries. Bluetooth is a registered trademark of Bluetooth SIG, Inc ^ADR 81/02 fuel consumption will vary depending on a combination of driving habits, road conditions and condition of vehicle. *2009 YTD. Source VFACTs. Current as at 1 October 2009. A) Campaign price for i30 SX hatch petrol manual. B) Campaign price for Get z 1.4, 3 door manual. C) Campaign price for Tucson City SX manual. HMCA631/HPC/HM hyundai.com.au or call 1800 186 306 TUCSON FROM $22,990C DRIVE AWAY 2009 MOST ECONOMICAL COMPACT SUV TO OWN AND RUN4 >> 8.0L / 100km^ >> ESP Stability Control >> Traction Control >> Bluetooth >> Full size spare >> 16" alloys 990 C E AWAY GETZ FROM $12,990B DRIVE AWAY T 2008 AUSTRALIA S BEST MID SIZE CAR UNDER $28,0001 2009 MOST ECONOMICAL SMALL CAR TO OWN AND RUN2 >> 7.2L / 100km^ >> ESP Stability Control with Traction Control >> ABS with EBD >> Glovebox drinks cooler >> iPod and USB connectivity >> Full size spare FROM $19,990a DRIVE AWAY LOW OPERATING COSTS AWARDS UNLIMITED 5 YEAR WARRANTY ESP STABILITY CONTROL JATO COMPARISON 2009 MOST ECONOMICAL LIGHT CAR TO OWN AND RUN3 >> 6.1L / 100km^ >> Bluetooth >> Immobiliser and alarm >> Remote keyless entry >> Full size spare >> Air Con with pollen filter AUSTRALIA S FAVOURITE LIGHT CAR!* MOTORS PT Y LTD HOBART CNR COLLINS AND BARRACK ST HOBART 6230 7220
November 28th 2009
December 12th 2009