Toyota Corolla 2013 Problems

If the car won’t accelerate beyond 40km/h, it could be because it has gone into limp-home mode in order to protect itself from further damage. If so, that’s possibly because there’s a major problem somewhere in the driveline. But the chainsaw noise is pretty worrying, too, and suggests that something is rubbing on something else that shouldn’t be.

The best advice is to not drive the car any farther until it’s been checked by a mechanic. Continuing to drive it risks doing more damage to whatever is already wrong with it.

Buying for an 18-year-old male is a difficult task. What you think he should drive is probably not what he would like to have. The best approach is to buy the latest model you can afford, because that will be the safest, have the best economy, and be worth the most when you want to sell or trade it. Your budget would suggest a four-cylinder small car of around 2012/13. Something like a 2013 Toyota Corolla would get you 5-star safety, be quite economical, and relatively easy to sell later on.

There are a number of things that could be causing the brakes to squeak. The best thing to do is to take the car back to the dealer and insist on having it fixed. It would appear that the dealer has not properly investigated the noise; he seems to have been guessing.

It's far better to have more ratios, since it keeps the car's engine operating at maximum efficiency for more of the time. Top-end car companies are now going for eight speeders, which are brilliant with diesel engines. But Japanese companies are turning to constantly variable transmissions, which don't have cogs - just adjustable belts that stop at preset ratios - and these are often disruptive and the operating software is poorly tweaked.

Yes, you won't have caused any damage, the starter won't have engaged.
 

It's generally held that a small increase in the tyre pressure over the stated pressure will give you better wear and better fuel consumption, and that's why the tyre people are doing what they're doing. The stated tyre pressure is a compromise the carmaker makes to get the best blend of wear, consumption and ride comfort. By increasing the pressure you can get better wear and economy, but you can also a firmer ride, which you might find uncomfortable. If in doubt use the carmaker's recommended pressure.