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Hi Breda,

Well, on the one hand, both the Aygo and the Auris are very well built and reliable so both will minimise any potential for expensive maintenance costs, and both are very frugal and economical, so either would be a fine choice. The Auris might be a bit more of a painless switch if you've been used to a Golf, as it's similar in size and comfort levels.

But, as you say that your journeys have decreased in length, switching cars may not actually save you any money. Changing cars is usually more expensive than maintaining and running an older car, and you need to sit down and do your sums very, very carefully. Work out what the actual cost of change is for you (the price of either car you are considering minus the trade-in value of your Golf, but including the cost of finance) and balance that against the cost of continuing to run and fuel your existing car, factoring in some cash for a good service and a new set of tyres (often the best way to improve your fuel economy).

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Hi David,

To be honest, I'd be tempted to hang on to the SX4. Suzukis are generally astonishingly reliable, whereas with the best will in the world, Renaults are not. Even if your mileage is increasing, there are cheap and simple ways to improve your economy (a tune-up, low rolling resistance tyres, practice) so my best advice is to stick with what you've got. 

In the meantime, I'd say you're looking at a trade in value of around €8-9,000.

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Hi Philip,

I'm assuming you're referring to TDI diesel versions of both. The Superb is a much larger and heavier car so it doesn't feel quite as rapid, but it's not at all disappointing. That engine has plenty of torque to make it feel usefully quick when you need it to. The Octavia RS, however, is undoubtedly more of a performance car, even in diesel guise. The Octavia feels sportier in general because of its RS interior bits and pieces, low profile tyres and sports suspension too. A review for you:

Skoda Octavia Combi RS TDI review

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Hi John,

I'd say on a trade-in you'd probably get about €2,500 to €3,000 for it. But make sure you do your sums carefully when changing. The cost of change can often outweigh what you're spending on petrol. Maybe practice some seriously economical driving techniques? Take any excess weight out of the car by emptying the boot etc. And get the engine properly serviced and tuned, with fresh filters and new oil.  Check the tyres for condition and correct pressure. You'd be surprised what a difference things like that can make to your fuel consumption.

Hope that helps

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Hi Ian,

There are a couple of alternatives to the Q7 alright. The Land Rover Discovery is probably the best all-round seven-seat SUV on the market and easily matches the Q7 for driver appeal, cabin space and premium image. The only problem is that Land Rover is still working its way up from a low point in terms of reliability, and while the current Disco is certainly very well built, we'd reckon that a Q7 would be a little bit better in terms of reliability when you're talking about a car that's already a few years old.

In fact, we know of only two issues with the Q7. One, it's apparently quite hard on tyres and two, if it's got an electric tailgate, it can open or close with a mind of its own sometimes, although that should have been fixed in a recall by now.

You could go for a BMW X5 with seven seats, but there's not as much space in the third row in the BMW, so it depends on what you need those extra chairs for. If it's only for occasional use, for kids etc, then the X5 is well worth a look and is a fantastic car to drive. If you need to put adults back there, stick with the Audi. You could downsize to a Hyundai Santa Fe seven-seater of course, which is a reliable, affordable choice but lacking both third row space and the cachet of the Audi.

Or you could steer away from the SUV world altogether and get a Mercedes-Benz E-Class Estate with the extra rear-facing seats in the boot. Bit of an unsung hero that one, and much cheaper to run than a big 4x4. Or, of course, you could do the whole off-roader thing properly and get a long wheelbase Land Rover Defender, but you'll need ear plugs for long journeys.

Choosing between a 2007 or a 2008 Audi Q7 is all down to the price and the individual car. There was a facelift in 2009 that brought some engine updates and cabin and styling changes, but if you can find a good 2007 one, with a full Audi service history, you could be looking at paying as little as €20k. A Q7 for the price of a new Ford Focus? Not bad...

Let us know which way you go

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Hi Patrick,

Sadly, probably not a lot. I'd say around €2,500 to €3,000.

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Hi Pat,

I'd say you're looking at a probable value of between €5,000 and €7,000 with that kind of mileage. Trading in probably the better route, unless it's a diesel you're selling. Private buyers just don't seem to want to know about petrol cars at the moment.

Let us know how you get on.

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Hi Bill,

Is that the 1.8-litre engine? If so, then it had an official fuel economy figure of 32mpg. I say ‘had’ because that’s a 16-year-old car and a huge amount is going to depend on how well it’s been looked after. Generally speaking, I’d say that you should expect around 25mpg from it around town, and maybe 35mpg on a longer run.

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Hi Saz,

If you're buying something that old, a lot of the potential fuel consumption is going to be down to the condition of the car and how badly worn the engine is. On that basis, I'd suggest you hunt around for a late nineties, early 2000s Suzuki Alto 1.0. They're as close to indestructible as any car can get to and the dinky little 1.0-litre engine should return mid-forties MPG, even around town. Again though, if you're looking to maximise economy, make sure it's serviced, make sure it gets a good high-grade engine oil and some decent tyres. There's nothing like good maintenance for driving your fuel bills down.

Let us know how you get on

Expert answer

Hi Pat,

They're generally quite solid, but there are a few crucial checks to make. Alternator belts can wear and make a horrible screeching noise when they do. The HDi engines need an additive put in at 60-80,000-mile intervals. A heavy clutch pedal may mean clutch failure is imminent. There are diesel particulate filter issues - if the DPF light comes on and stays on, run the car at medium revs in a low gear for several kilometres to try and heat up the exhaust enough to burn out soot from the DPF. If that doesn't work, it's an expensive part to have replaced. Dual-mass flywheels can get warped and cause a juddering effect. A lumpy idle or excessive exhaust smoke may mean that the exhaust gas recirculation valve needs replacing. 

Inside, the radio and its LED screen can be fragile while, if the air conditioning isn't puffing hard enough, it usually means that the pollen filter needs emptying. Underneath, watch for the front suspension being out of alignment and for excessive tyre wear - 407s were always quite hard on their tyres. A groaning power steering system means the pump needs replacing too.