Ask the expert: ‘Which retirement convertible should we treat ourselves to?’

Dear Alex, 

We’re looking to buy a 10- to 15-year-old automatic convertible. Owing to our age (late 60s) we would prefer something that’s not too low down. It should be reliable and good-looking, but it won’t be used a lot. We understand Audis circa 2008 might fit the bill – what would you recommend? 

- PG

Dear PG, 

It’s true that the Audi convertibles of the age you mention – I’m talking here about the A3 and A4, given your requirement for a car that isn’t too low – are generally really nice cars to drive and to be in, but they aren’t the most reliable things in the world. Petrol models suffer with timing, chain-­issues and high-oil consumption, while automatic gearboxes on all versions can be problematic too. 

Plenty of people own these cars and love them – just do your homework and make sure you can buy a later car that’ll hopefully be less prone to problems. The BMW 3 Series is an alternative option, though you’ll have to watch which engine you choose for the sake of reliability. 

The four-cylinder models have several issues, though the six-­cylinder engines are better, and of them it’s the 323i and pre-2012 330i that use the most dependable N52 engine, so aim for one of those. 

The Mercedes E-Class is worth a look too, though a diesel version would be best; petrol models are scarce and those that are out there suffer with worn timing chains. But an E350 CDI V6 is a delightful thing to drive, and manages to be ­comfortable, powerful and economical. 

This diesel engine has a good reputation for reliability, too. Just make sure your local town isn’t planning to introduce a clean-air zone soon, as these Euro 5 diesels will likely face a charge to enter. Finally, a more left-field option would be the Lexus IS250C. 

These folding hard-top convertibles are few and far between, but if you can find one, they’re about the most reliable car of this type. The downside is that the IS feels pretty sloppy in corners, because Lexus added a lot of chassis stiffening, which combined with a plex-folding roof made it rather heavy. But the mellifluous V6 engine and comfortable ride help make up for this.