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How many gears does a car really need?


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The first car that I drove had 3 forward gears, and it wasn't enough. It wouldn't pull its own weight in top gear and 2nd was way too low.

My second car had 4 gears and managed just fine.

Then it was on to 5 speed boxes.

My last car had 6 forward speeds, and when I replacedthe car the new model had 7. You seem to spend all day changing up and down trying to remember what gear you are in.

 

I know some 4 by 4s have dual speed transmissions and therefore double up on gears, but I'm talking about gears that you are expected to use just driving to the supermarket and back.

 

How many gears does a car actually need? I've come across one with 8 gears. Any advance on 8?

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Cars nowadays are designed with fuel economy in mind which is one reason to have more gears so that the engine can be using less revs and therefore less fuel at a bigger range of speeds.

 

Having said that some engines nowadays seem to have more of a powerband with a smaller capacity now so you need to change gear more to get any kind of performance. The alternative would be to have a bigger V6 or V8 engine which would pull at any revs, therefore you could have just 3 widely spaced gears.

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Years ago, well in the 1960s at least, there were cars around with a device called “an over-drive”. This was the position that you selected after you got to the top gear. Right or wrongly , I always assumed it was pretty much like having a 5th gear, as most of the cars had 4 gears + reverse at the time.

 

The cars I had in the 1970s- mini 1000, Escort 1100 mk1, mk3 cortina 1600, all had only 4 gears + reverse.

 

My first car of the 90s (1235cc Nisan Micra ) was the first car I had with 5 gears + reverse. The 2.0 Granada I had at the same time also had the same gears arrangement.

 

I looked at a new Toyota Yaris T spirit 1.3 recently and that had 6 gears plus reverse. I would guess that there are not many (if any) new cars these days that have only 4 gears + reverse. Maybe manufactures are very conscious of the good economy required by most drivers, (like Muddycoffee has said).

 

It was once said that a manual box makes the driving experience more interesting. Manuals tend to be more fuel efficient than automatics too.

 

I have noticed that a lot of large cars tend to have auto-boxes for some reason.

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What car has 8 forward gears?

My current car has 6, purely for efficiency reasons as it can break the motorway speed limit in 2nd.

 

I suppose the most efficient (and astronomically expensive!) solution would be a car that is constantly changing the gear ratio as the speed changes - if such a thing were physically possible at all, that is. I wouldn't know, but I'm pretty sure that even if it is possible it would be hopelessly impractical on cost grounds.

 

I've heard of cars with seven forward gears, but never before of one with 8.

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