Hybrid Cars Advantages and Disadvantages

Hybrid cars are considered as the car of the future. It is able to effectively conserve fuel and at the same time, it only produces low levels of toxic fumes. Because of these benefits, hybrid cars are now growing in popularity every single day. Many people are now considering getting rid of their conventional cars and purchase a hybrid car to help in cutting fuel consumption cost. 

Hybrid cars have two engines for it to effectively conserve fuel consumption. It has the traditional gasoline engine and it also has an electric motor and batteries. The two engines work together in order to cut fuel consumption. With this technology, you will be able to cut fuel usage by more than half. Just imagine, with a hybrid car, you will be able to go more than 60 miles to the gallon. With this kind of savings, hybrid cars are definitely the car of the future.

Hybrid car owners virtually do not feel the increasing cost in fuel prices. This is the main advantage of the hybrid car. There are other advantages that a hybrid car can give you. Recently, the President of the United States has signed an agreement that hybrid car buyers will be able to enjoy tax incentives. This means that by owning a hybrid car, you will be able to save money on taxes.

There are other benefits that the government imposes on hybrid car owners, such as free parking, and free entry to car pool lanes. Some even offer discounted fees on toll gates.

The braking in hybrid cars is also configured to capture the energy released and uses it to charge the batteries inside the hybrid car. This means that unlike electric cars, hybrid cars do not actually need to be charged from your home electric outlet.

However, with all the advantages that a hybrid car can give you, there are also disadvantages. The main disadvantage of hybrid cars is that the retail price is quite expensive. Only people who have enough money can purchase hybrid cars. However, the twist in all this is that hybrid cars are actually cheaper when compared to conventional cars in the long run. If you compute the total fuel consumption of both cars, you will actually see that you can save a lot more money on hybrid cars.

The only thing is that hybrid cars are expensive right from the car lot.

Hybrid cars are relatively heavy because of the heavy batteries installed inside the car. This is why hybrid car manufacturers integrates smaller internal combustion engines and are constructed with light materials and should be aerodynamic in order to maximize efficiency. This means that hybrid cars can never really go fast.

Another issue about hybrid cars is that it is very risky in accidents. What makes a hybrid car work effectively is also what makes it risky if it ever gets involved in an accident. This is because hybrid cars stores high amount of voltage in its batteries. This means that there is a high chance of getting electrocuted when you get involved in an accident. This also means that it is relatively difficult for rescuers to get the drivers and passengers out of the hybrid cars because of the dangers of high voltage in the car.

These are the advantages and the disadvantages of hybrid cars. Car manufacturers today are now looking for ways to get rid of the disadvantages of hybrid cars. In the near future, you will see that hybrid cars will be lighter and also contains less risk due to high voltage dangers.
 

BMW "No Reverse" Transmission Problem

An automatic transmission is just that- automatic, consequently most people tend to pay very little attention to it until a major problem rears its ugly head. 

Picture the scenario- you are driving along in the lap of luxury, the satellite radio blaring and the heated seats on. You have become accustomed to the comfort level and great driving experience brought to you by BMW.

You decide to stop at the local convenience store on your way home to grab some ice cream for the kids and a bottle of water for yourself. Upon returning to your car, you start it up, check your rear view mirror, put the shifter in reverse and then the unthinkable happens- the engine just revs as if it is in neutral and the car goes nowhere!

This article deals with the reasons behind an unexpected loss of reverse in certain BMW automatic transmission equipped vehicles, specifically the 3 series and 5 series vehicles that use the ZF5HP19 or steptronic transmission. This includes the popular 323i, 323ci, 325i, 328i, 330i, 525i, 528i, 530i, X3 and X5 models well as some others built in the 1999 to present model years.

To eliminate confusion, this does not apply to vehicles equipped with the GM 5L40 E transmission, just the ones with the sometimes problematic ZF5HP19. The 5L40 E has some issues of its own that are beyond the scope of this article but are certainly going to be the subject of another.

The failure rate for these transmissions seems to be very high and is expected to become much more of a problem as time goes by.

Typically, the vehicle is working perfectly while driving forward but when it is put in reverse there is a complete and permanent loss of movement to back up.

Reverse is typically a major feat for any transmission to accomplish- imagine the demands that are placed on a gearbox as it is asked to reverse the torque of your engine so that you can back up your nearly 4000 pound vehicle.

By far, the most common cause of the reverse problem in BMW's is the failure of the D-G clutch drum. Specifically, the snap ring that retains the D or reverse clutch breaks out of the clutch drum resulting in an inability for the clutch pack to apply.

The good news is that there is hope in regards to a proper repair. The factory has released an updated part that so far appears to be a permanent fix for this problem.

In our testing and in conjunction with several hundred successful repairs at our facilities, the new part seems to be metallurgically superior in several ways.

We have found that there is an improved radius area as well as slightly thicker casting. In addition to this, the grove that retains the snap ring is also relocated further away from the edge of the drum.

With this issue addressed and attention to detail in several other areas of the ZF5HP19 unit, the transmission can be repaired to "better than new" condition by a competent transmission rebuilder / remanufacturer. In fact, when properly repaired, the ZF gearbox becomes quite robust and can provide an almost indefinite service life.