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Hi Mike,

Well, the 1.6 Hyundai Elantra has official combined fuel economy of 38mpg, which is the equivalent of 6.1 litres per 100km. A sum of €10 buys you 7.46 litres of petrol at the average October pump price of €1.34 a litre. Assuming you reach the official fuel consumption figure that means you'll get 119km for your €10. However, you may well not reach the quoted average economy - very few people do and it's actually a pretty arbitrary number. How much less? I simply can't say - it depends on your own driving style, the condition of your car, the weather, the roads you're driving it on... Better play safe and just fill it up.

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Hi Prince,

That’s a tricky one. In terms of your consumer rights, you are most certainly entitled to a replacement car if this one is not up to scratch and the dealership has not been able to repair it to your satisfaction.

However, you’ll need to establish that there is a specific fault or faults with the car first. I’d recommend getting it inspected by an independent motor vehicle assessor (you can find them via a quick Google search) and get them to give you a full report on it. Then you need to bring that report to the dealer and demand that either the car is fully repaired (it’s still well within its original five-year warranty after all) or give you a replacement.

Let us know how you get on

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Hi Keith,

Both are excellent cars and the 175hp X-Trail's extra grunt could be very useful when hauling trees and trailers. That said, the Honda is still plenty grunty and a bit more plush inside than the Nissan. Actually this is a hard one to choose - I know from personal experience that the Honda is close to indestructible, but I also happen to think that the X-Trail is a really underrated car.

Coin toss so - go for the Honda.

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Hi Tara,

Yes, absolutely. Only major problems seem to be iffy radios and infotainment systems, and a fuel economy readout that's a bare-faced liar, mostly because it's still set to US gallons, not imperial ones.

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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 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. 

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Hi Finian,

Possibly, but it depends entirely on the car and how you're driving it. If you're talking about a small diesel-engined hatchback, then yes, there's quite possibly a problem if you're only getting 19mpg on average. Even driven for only short hops around town, most would manage at least 35mpg on average. Certainly worth a visit to the dealer to at least have it looked at.

That said, the single biggest influence on fuel consumption is driving style. Have you changed the way you drive, or your regular route lately? Are you spending a lot of time idling at traffic lights where you previously weren't? It all adds up...

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Hi Kieran,

Not massive. There's a tiny 1mpg gap between them in terms of fuel economy (the Toyota gets 59mpg, the Ford 60mpg), but in everyday driving , they'll probably work out pretty much the same.

Overall, the Toyota will probably be slightly more reliable, and the Ford slightly cheaper to service and repair if anything does go wrong. The Toyota will probably be a little cheaper to insure too, and its road tax will be slightly lower.

On balance then, the Toyota is likely to be fractionally cheaper to run, but there's precious little in it.

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Hi Martina,

There are many possible reasons for this drop off in your fuel economy. Start with the easy things - you'd be surprised how important they are.

1 - Are you carrying extra weight in the car now than you were before? Golf clubs (or bricks!) in the boot? It can have a large effect.

2 - Have you fitted a roof rack/box? Again, can have a massive effect.

3 - Check the air pressure of your tyres. This is very very important. Underinflated tyres cause extra drag, requiring more fuel. Don't over-inflate either though, as that could lead to a blow-out. Follow guidelines for the car/tyre.

4 - It's winter so you're most likely using the lights, heater and demister a lot more. Those all use fuel. In particular, make sure you turn off the rear window demister when it's not needed - it uses a lot of energy.

All the above you can do for yourself, so do and then see if things have improved. After that we would suggest that you have your car serviced if it has been a while. The air filter and/or fuel filter could be clogged and it's a good time to hook the car up to a diagnostics machine to see if there are any error codes indicating other issues.

Let us know how you get on

Expert answer

Hi Stephen,

I agree it can be a little annoying on an automatic car, as you can't decide when you do and don't want it to happen at any given moment. I'm sure you're aware that there is a button on the dashboard to disable it at any time, but it sounds like you'd rather disable it completely. Sadly, there's no legitimate way to do this. The car's official CO₂ emissions and fuel economy figures rely on this feature, so even if you find a fuse or relay to remove for the system there will at the very least be a warning light on in the dashboard - and it may even go into 'limp home' mode.

By way of explanation, the 'combined cycle' is a relatively low-speed and short duration (standardised) test cycle all the car makers adhere to for their CO₂ and fuel consumption figures. Stop-start makes a big difference for this as the car is idle for considerable amounts of time. In the real world, this tends to happen only in slow traffic or in town with lots of traffic lights. You would see a saving in those situations, but in reality it'll be small.

Sorry not to be of more assistance.