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Hi John,

Yes, I'd say it's worth getting the bigger battery. It perhaps doesn't make quite as much of a difference as you'd think but it keeps the range anxiety at bay for a while longer on main roads and around town you'd probably only have to charge up once or twice a week, thanks to excellent regenerative braking. 

Read our Nissan Leaf 30kWh review here

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Hi George,

Yes, and I’m assuming you mean the 1.6-litre diesel model? It’s a very good engine – decently reliable and very economical and it needs long motorway miles to make sure that the diesel particulate filter doesn’t start clogging up. The particle filter also needs to be replaced at 120,000km. It needs a cam belt change every 160,000km, but you need to keep it checked at regular service time as the belt can stretch and slip. The water pump is also a weak point, so keep an eye on that. There are a few random electrical issues with these cars too, mostly to do with the ignition system and intermittent warning lights on the dashboard. They’re more niggles than serious problems though.

Oh, and don’t buy one without a full service history. That engine needs a steady diet of really high-quality oil at service time, or it can develop sludgy waste oil in delicate parts.

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Hi Karina,

You are, if I may say, a smart cookie. Yes, the Insignia is decently solid and pretty reliable, but the fact is that they do get issues with their electrics and, as we all know, ain’t nothing more reliable than a Toyota. Well, almost – have a good look at the Mazda6 estate too, as it's handsome, really good to drive and hugely reliable. A good foil to the Toyota. 

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Hi Joe,

A hugely underrated car, the S80. Big, comfy and mostly very reliable. As ever with something that started out in life as an expensive model, don’t buy anything without a full service history and check carefully for any electrical gremlins. They’re also sensitive to knocked-about suspension, so check the tyres carefully for any uneven wear and tear. Other than that, reliability is pretty decent. The bigger diesel engines can be expensive to run, but if you go for the 1.6 diesel you’ll have a car that’s really frugal and not all that under-powered.

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Hi Donal,

Short answer – no. That’s partially down to the fact that such in-depth comparisons have to take into account the type of mileage you do, the electricity tariff you’re on and more. The best I can suggest is that you have a good long look through our various electric car reviews and then use the cost calculators on both the ESB and SEAI websites to further refine your research:

BMW i3 review

Mercedes-Benz B-Class Electric

Nissan Leaf review

Renault Zoe review

Tesla Model S review

Volkswagen e-up! review

Volkswagen e-Golf review 

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Hi Gavin,

I’d still tread carefully. Yes, the Sensotronic was dropped but the basic electrical system remained the same and it was still prone to glitches and issues. Mercedes didn’t really start to get its quality mojo back until the 2009 W212.

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Hi Justin,

It was always a nice car to drive and never less than pretty, but watch out on the reliability front - it comes from Merc's dodgy period. The engines and gearboxes are pretty solid but everything electrical is suspect, and the interiors are pretty poorly built in some cases. Watch the frameless glass in the doors too - it can slip away from its rubber seals and let in a lot of wind noise. 

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Hi Michael,

Yes, the Berlingo is generally excellent. It is occasionally prone to electrical issues, but they tend to be minor and the engines and gearboxes are long-lived and hard-wearing. As long as you buy one with a full service history, you should be fine. The cabins can be a little fragile at times, but being van-based, it should be easy to clean out after the dogs.

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Hi Noel,

Not bad actually – comfy and hugely economical, but check it carefully for electrical faults and clonking suspension, not to mention any possibility of diesel particulate filter failure. And don’t dare buy it if it doesn’t have a full service history.

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Hi Kathleen,

The new Toyota Prius looks to be rather impressive, and with just 70g/km of CO₂ it'll certainly be cheap to tax. We reckon you should probably look beyond the Prius though, to the new generation of plugin hybrids that can offer significantly longer electric-only range (as much as 50km) and which still have a petrol engine and a decent fuel tank for longer journeys. Have a look at the Volkswagen Golf GTE or Mitsubishi Outlander PHEV for example.