Bikes make car thirsty
BRIGHT SPARK Our 2010 Holden Calais V Series 2 Sportswagon uses about 9.3L/100km on the highway and 11.0L/100km with bikes on the roof. We do have permanent roof racks and bike carriers fitted. It’s done 6900km, should I be getting better fuel economy?
It’s a little higher than I would expect but roof racks and bikes carriers would have an adverse effect on fuel consumption, as would carrying the bikes themselves. I amafter a company that can test the speed of my Lexus IS250 against what is shown on the speedometer. When I am driving along it seems as though cars are going past or are tailgating me, while according to what I see in front of me, I amsitting on the speed limit. This gives me the impression that something is wrong with the speedometer. What would be the likely cost of a test?
Normally I would expect your speedo to be reading 5 per cent higher than the actual speed you’re doing. By law, it could be as much as 10 per cent faster, but on average most cars appear to be closer to 5 per cent. You could have the speedo checked by an instrumentmaker— but I would suggest you first check it against an overhead speed indicator on a nearby highway. While they are not necessarily 100 per cent correct, they are a good guide. You could also check it against a GPS unit, which would give you a good indication of a problem. How long should a car battery last? The one that came as original equipment in my low-kilometre, shorttrip 1999 Jeep Wrangler Renegade has just given up the ghost after 11 years. My husband, who is a car nut, showed me how to prise the cell caps off the top of the battery to check the electrolyte. Even though it was supposed to be maintenance-free it still needed topping up every now and then. Also, the car came with an insulation blanket around the battery; is this to keep it warm, or cool? And would any of this actually extend the life of a battery, or is it just good luck on our part?
My husband has now replaced the battery with a new Optima Spiral Cell,
Calais: Carrying bikes
affects fuel use
Hummer: No LPG kit available