Expert answer

Hi John,

No, it’s not just another cost to the consumer. Stop-start systems are designed to prevent the car from running the engine unnecessarily at standstill when doing so would be at its most wasteful of fuel. After all, if you’re not moving then what is the point in having the engine on? Stop-start systems are specially designed with either a beefed-up alternator or an integrated starter/generator so that it can handle multiple stops and restarts in rapid succession, and it’s estimated that on an average car, stop-start can save as much as ten per cent of overall fuel consumption – not to be sniffed at, never mind the benefits to city-centre air quality.

Admittedly, the car makers have brought in stop-start to bring their cars' official CO₂ and fuel consumption figures down, and the benefits are only really felt if you are stopping and starting regularly. If you spend all your driving time on the motorway then you won't use the system at all.

Expert answer

Hi David,

They’re not bad actually. The only major mechanical items that cause regular bother are the engine’s exhaust gas recirculation valve (if the engine is down on power or putting out lots of smoke, suspect this…) and the fragile water pump on the 1.6 HDi diesel. That 1.6 also needs a steady diet of high grade oil at service time. The only other issues are minor electrical niggles, such as the electronic parking brake, sticking fuel filler flaps and the like. Buy one with a full service history and keep it serviced and you should be fine.

Expert answer

Hi Jennifer,

You could try a Skoda Superb Combi, but I think that many big dogs would overwhelm even that car’s massive boot. Perhaps you need to go down the road of a van-based MPV. Maybe try a Citroen Berlingo or Volkswagen Caddy Life? Seats for the kids and (hopefully) enough space for the dogs, plus their tailgates aren’t too high off the ground so the older dogs shouldn’t have too much trouble getting in and out.

Expert answer

Hi Mick,

Well, given the list of priorities you’ve given me, either the Octavia or the i40 would seem ideal, although it’s the Hyundai that will hold on to its warranty longer, as it has a five-year warranty compared to the Skoda’s three-year one. The Skoda is by a very slim margin the nicer of the two to drive though, so you’ll need to bear that in mind. That said, the i40 is more refined overall (not to mention being a bigger car, with more space in inside), so it’s really a matter of deciding which of your priorities gets top billing.

Expert answer

Hi Chris,

You’re going to need something comfortable as well, doing that kind of mileage, so I’d suggest a MINI One D. There are a few around at your budget,  they’re exceptionally frugal, have good seats and are fun to drive into the bargain.

Expert answer

Hi Martin,

There are a couple of things to check - that engine needs a lower auxiliary belt change at around 120,000km so make sure that's been done. You need to be watchful for the diesel particulate filter clogging up and the return pipes for the fuel injectors can leak, so if there's a strong smell of diesel when you lift the bonnet, those will need replacing. 

Expert answer

Hi Carl,

Yes, theoretically you can run any diesel car on bio-diesel, but you need to be careful with where you're sourcing your fuel from - low quality bio-diesel can clog your injectors up. 

Expert answer

Hi Lurdes,

OK, lots to deal with here. Let’s go through it piece by piece. Theoretically, you will always get better value buying second hand than buying new. 'Buy at three, sell at five' (years old) is the rule of thumb to maximise your value and minimise your exposure to depreciation. But, you’ve been burned in the past by unreliable cars (been there, I feel your pain) so I would say that buying new is actually the best thing for you this time around, especially as you want to hold on to the car for an extended period.

Of the two cars you’ve mentioned, the Toyota Verso should be the most reliable. Nothing much wrong with the Ford, but if reliability is your priority then always buy Japanese. Happily, a manual 1.6 diesel Verso seven-seater is just inside your budget, at €29,100 and there is currently a €3,000 trade-in offer on that model, which means you’ll get a lot more for your old Scenic than you would if you traded it in normally.

There is only one hybrid people carrier so far, and that’s the Toyota Prius+, but to be honest, we couldn’t recommend it. For a start, a new one will bust through your €30k budget barrier, but beyond that it’s a disappointing car – far too thirsty unless all of your mileage is done in town at low speeds. The Verso is a far more versatile car.

Expert answer

Hi Jenny,

The Montana will be cheaper to buy of course, and I'd say overall reliability should be roughly similar. Tax is exactly the same if you're taxing them as commercial, but it gets a lot more complicated if you're taxing them as a private vehicle. Lots of hoops to jump through. 

Expert answer

Hi Linda,

€6k is at the bottom end of 2009 Avensis trade in values and your Toyota dealer is possibly boosting your trade in a bit (€10k is definitely top end) to keep you in the family.

I think with 15,000km annual mileage you definitely don't need a diesel - you'll really struggle to make back the extra purchase cost in fuel savings and if you're not doing lots of long journeys you could run into problems with the particulate filter. The Audi wouldn't be expensive to run at all - they're reliable and frugal, but the servicing would probably be slightly pricier than for a Toyota.

As for the Auris Hybrid, I think it sounds like it might be just about right for you, especially as most of your mileage is around town and that's where it works best. You may find it hard to get the best economy out of it on that long run to West Cork, but the rest of the time it should be about right, and super-reliable too.

An ex-demo is always a good idea as you'll get it cheap with minimal mileage, but there are fewer of them around these days.

Relevant reviews on the site:

Audi A3 Sportback 1.6 TDI review

Toyota Auris Hybrid review