Does the use of a radio increase a car's fuel consumption?

Just to be clear by reducing weight I was referring to all ways to lessen the weight. Instead of the nightly gas price change on the news they can tell you that removing the bag of kitty litter will save a certain amount of gas.

Hmmm. . .
Energy content of a gallon of gasoline is 131MJ, if wikipedia is to be believed. That converts to 36389 Watt-hours of energy. Dividing that by 55 watts yields 662 hours.

You sure your math is right? or did you use something other than a 100% efficient generator?

Along the same line, you typically don’t listen to your radio at 100% of it’s rated power output either.
About headlight wattages. The 35 and 55 watts quoted is per headlight. Double it for the per car figure, unless you drive around with one headlight out. If you do this, shame on you.

Reported

According to a report I read, the introduction of DRL (Daytime Running Lights) in the EU would cost around 10 million Euros annually due to increased fuel consumption.

Power doesn’t come from your car battery. Or rather, it does, but that’s not ultimately the source. Your battery is continually receiving power from the alternator, which receives it from the engine, which receives it from the fuel.

zombie or no

if the radio is turned up loud then it caused your car to vibrate ever so slightly disrupting the air flow causing turbulence.

Note: Bumped by spammer.

My Prius burns more fuel per mile in Winter than in Summer. There’s a thread on it somewhere, but I’m not going to look for it. I think the conclusion was that the main cause of the reduced mileage was that cold air is more dense than warm air, so more fuel has to be added to the mixture to maintain the proper ratio. But when I’m driving in Winter, the heater, headlights, and windshield wipers are on constantly. I’ve noted, by watching the instant mileage readout, that the car says it is getting more miles per gallon when accessories are off; but it’s not possible to know whether this is ‘real’, or if I just happen to be looking when the slope of the road is favourable.

The batteries are more efficient in warmer weather. A more important factor is the gas engine runs more in the winter so you can have heat. In the warm weather, you’re cruising around just on the battery more of the time.

I swear, this must be all too common. There are certain tenants (and/or visitors) who park outside my apartment, whose rolling concert halls have woofers that literally shake my windows and walls.

I’d love to get a bazooka and blow those cars to smithereens – but I imagine that would be little more than a little extra background noise on top of what’s already there.

That sounds familiar. Thanks.

If you move around with the music you’ll be burning calories. So you’ll weigh a little less, increasing the car’s efficiency.

Winter-blend fuel in California gives lower gas mileage than summer-blend fuel does. I don’t know about other states.

part and parcel of hybrids. Well, actually, any car, but the difference is more noticeable with hybrids. reasons being:

  1. when you start out your traction battery is cold, so it isn’t able to contribute as much until the cells warm up to normal operating temperature

  2. if you’re using the defrost, it runs the A/C compressor and even though (as I recall) the Prius has an electrically driven compressor, it draws power from the traction battery so it’s further reducing the amount of EV energy available

  3. the gas engine simply has to run more often in order to maintain temperature or else the catalysts would get too cold and it would have to drop back into open loop. Certifying that for emissions would be a nightmare.

  4. the already mentioned difference in winter and summer gasoline. Winter gas is a bit more volatile to ensure ignition reliability in cold weather, and the trade-off is a bit less energy density.

Listen to lots of dance music, help the car move along with steady pelvic thrusts.