Expert answer

Hi Sean,

We are driving the new European-spec Ford Mustang next month so keep an eye on our reviews page for the full lowdown. 

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Hi Sandra,

Dodgy diesel can do a lot worse than just damage the fuel pump. I reckon, and sorry to be the bearer of bad news, you either need a complete strip-down and rebuild or possibly a complete replacement engine. That laundered diesel (and petrol) is nasty stuff, so avoid any fuel seller that appears to be even slightly less than kosher, especially in the areas around the North/South border. Sticking to the big brands may cost a few more cent per litre, but a new engine is a heck of a lot more expensive than that.

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Hi Aisling,

Yes they can, but they may not be the most cost-effective. If you're worrying about the diesel particulate filter in the exhaust getting clogged with soot and causing an expensive failure (and that can happen) then don't worry - a quick spin up and back the nearest motorway in a low-ish gear will heat the system up enough to let it burn off the soot and all will be well. Do it once a week for 30 minutes or so and you'll be fine.

The other issue is simple one of cost though. You will spend more money to buy a diesel car than you will a petrol and when you're only doing low mileage it's hard to generate the savings from fuel burn to make up the extra you've spent up front. That's why petrol makes so much sense for lower mileage drivers.

The thing is that the Qashqai can be had with a petrol engine, but it suffers much harsher depreciation when you buy it - so you're in a bit of a catch 22. Petrol is better for your driving profile, but worse for retaining value in this particular model. You may need to expand your search out to some other cars to make your sums add up.

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Hi Michael,

If you want to go petrol then there are few better options than Volkswagen's 1.2 TSI turbo, and when it's fitted to the Skoda Octavia, you've got a near-perfect combination. Drive it gently, and you'll probably get very little difference in the overall fuel consumption compared to your old 407. That engine hasn't really been in the market for all that long, so it's a little hard to get a handle on whether or not there are any reliability landmines out there, but in general we've heard nothing bad. 

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Hi Geraldine,

It's always difficult to assess cars from afar, so we'd recommend bringing your car to a mechanic. Nonetheless, other things to check include the HT leads to the spark plugs, the cleansiness of the air filter and perhaps the fuel delivery system - the injectors or fuel pump.

Best of luck with it

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Hi Wayne,

The Mii has a tank capacity of 35 litres, including a 'reserve' of four litres. That's when the warning beep occurs. Obviously how far the car will then drive will depend on a wide range of factors, so don't take a chance...

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Hi Declan,

Don't worry about the handling - MINIs are terrific to drive. Great fun. The C30 is perhaps a bit less so and Volvo parts and servicing have always been on the pricey side, but it's a much more practical car than the MINI, which is seriously short on space. Both are fine cars though, reliable too so it's a question of what you value more - space and comfort (Volvo) or driving fun (MINI).

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Hi Jane,

I have to admit I'm not a big fan of the current X3. Too hard-riding and not practical enough for my liking, although I'll grant you it's very good to drive. 

But, while the Outlander isn't the most exciting or dynamic vehicle around, it does have a few advantages. It can be had as a seven-seater, it comes with an eight-year warranty and Mitsubishis tend to be very reliable.

Best of all, for the price of an X3 you could get into the PHEV plugin hybrid Outlander, which is a properly ground breaking car. Get an E-Car charger on the driveway (you should still be able to get a free one if you're quick) and you'll be able to go 50km without using the petrol engine, but you still have a proper fuel tank on board for long journeys and can average 40mpg with the petrol engine going. 

Can't go wrong, really...

Further reading:

BMW X3 review (pre-facelift model)

Mitsubishi Outlander PHEV review (first Irish drive)

Expert answer

Hi Harry,

It's very difficult to assess such a thing remotely, but here are a few things to check:

1 - Are you carrying extra weight in the boot?

2 - Check your tyre pressures, condition and alignment - makes a big difference.

3 - Check the cleansiness of your air filter. Very important.

4 - Have it serviced if it has not been in a long time.

5 - Check that none of the brakes are binding - jack up each corner in turn and with the car out of gear and the handbrake off you should be able to freely turn each wheel. If not, the brakes may be binding and need to be looked at.

6 - Only when you've exhausted the simple stuff should you look into getting the car hooked up to a diagnostic machine. Some versions of the TDI engine had problems with injectors and turbos that could lead to higher fuel consumption, but the fix is expensive.

Let us know how you get on

Expert answer

Hi Bill,

The trick will be to buy the newest one you can. The 2002 to 2010 E-Class was beset with all sorts of reliability issues, especially in its complicated electronics.

Your best bet is to get a current-shape E 200 CDI. It's a 2.1 but the low emissions and frugal fuel economy will keep your bills down.