Expert answer

Hi Patrick,

I believe that the 1.3-litre turbodiesel Astra has about the same maximum power as your 1.4-litre petrol model, but it has signficantly more torque so it would be faster overall. Also, being six years younger won't hurt it.

The biggest difference between the two will be the manner in which the power is delivered. Petrol engines without turbocharging produce all their power when being revved, while the turbodiesel engine is better in the mid-range.

As with all car purchases, we recommend you drive the car you're considering for as long as possible on a variety of roads to make sure it suits you.

Let us know if you need anything else and tell us how you get on.

Expert answer

Hi Gerard,

Sorry for taking so long to come back to you, but we wanted to investigate this a little. I've asked several independent and franchised garages about this and nobody has come across this problem with the VW Group TDI engines.

How did you determine what actually happened? Just add a comment below this question.

Expert answer

Hi Marie,

We had a chat on the phone to get more information and now know that you would prefer to sell the L200 privately and use the cash to buy your next vehicle, so your budget is about €10,000 - €12,000.

The difficulty in getting something with height is that the SUVs going back a few years tended to be diesel with fairly large engines, so before 2008 these engines were in some cases cheaper to tax than they are now. Emissions were higher, but you were charged - as you are probably aware - for the size of your engine. I'm sure you don't want to get landed with a high road tax bill per year, but we will explore some options. 

The first is a 2004 Toyota RAV4. There is a model in a dealership in Louth, which I realise is quite far from you, but this diesel model is a beaut and is at a SIMI dealer so this brings with its some safeguards. This RAV4 is under €10,000 and has low mileage, though is going to cost €823 to tax each year. 

The Kia Sportage fiesel would be a great little buy for you. This small SUV has proven to be very reliable and very well liked by owners. This one in Cork is a little over your budget, but as a cash buyer I would think you could bargain down the asking price of €13,900. 

A car that you might not have thought of, but I have always rated as a good little car, is the Fiat Sedici. This small SUV has four-wheel drive, a diesel engine and is cheap to buy and run. We found a 2009 model in Laois with just 23,000 miles on the clock and the asking price is just €11,750. This would be a nice little runabout and it still retains some of the height of the SUV. This will cost you €447 per year to tax. 

Another good choice, although the annual tax will be the same as the RAV4's, is the Nissan X-Trail. This is a really nice example from 2005 that has a 2.2-litre diesel engine and would be a nice vehicle to own. Again, if you couldn't cope with the high annual road tax then it might not be the best option for you. 

I'd be inclined, if it were me, to buy that RAV4, as it would be a nice vehicle to own. 

I hope this helps!

Expert answer

Hi Patricia,

It's true that diesel engines are not as well suited to life spent in town and short journeys. Many of the components can become gummed up, reducing performance and increasing fuel consumption. Diesel versions of many cars are more expensive to buy in the first place too, and it's no point paying that premium unless you're going to make it back over longer annual mileages. Finally, petrol cars are generally quieter, making them more relaxed in town.

Hope that helps

Expert answer

Hi Fergal,

I have just spent a week in a TDCi Mondeo. It was an automatic and I really liked it. The gearbox is a little lazy at times, but overall the car is a joy to drive. There is a new Mondeo coming later this year though so you might want to hang on for that as it features new engines as well.

Expert answer

Hi Henry,

It's not often we get asked about the second-generation Fiat Croma. It didn't sell all that well as buyers didn't really know whether it was an MPV or an estate. However, it sounds like it could be an ideal candidate for your partner's needs.

The Croma majors on space, practicality, comfort, safety and equipment. The version you found has very few kilometres on the clock, which is always a bonus. Make sure you check that every switch and control is working though, as Croma owners have reported niggling electrical faults.

Our other piece of advice, if you like the Croma, is to look for a diesel version. The MultiJet diesel engines are strong and economical so would be better than the 1.8-litre petrol version over long distances. That said, the petrol engine is quieter.

Hope that helps.

Expert answer

Hi Ger,

We are likely to see the new EcoBoost engines in the facelifted version of the Mondeo, which is expected to make its debut at the Paris Motor Show later in the year.

The new EcoBoost engine will be similar to that about to make its debut in the new S-MAX. This is a 2.0-litre petrol engine (which has 203hp), but there will also be a 1.6-litre EcoBoost at some stage later this year. The 1.6-litre EcoBoost will make its debut in the new C-MAX and Grand C-MAX models. We are guessing at the power, but I think 130-150hp from the 1.6 EcoBoost would be about right. 

Ford EcoBoost combines a single turbocharger with a direct injection fuel system, delivering, as Ford says, V6 performance from a four-cylinder with fuel economy improvements of at least 10 percent. 

Expert answer

Hi Carl,

The thing about fuel economy figures from the manufacturer is that they are often very difficult to match. We seldom match them, as they are recorded using specific lab conditions and are often not really reflective of real-world conditions.

There are some things you can do to improve your fuel economy however:

1 Pump up to cut down 

Under-inflated tyres create more resistance. That means your engine has to work harder, so more fuel is used. Check and adjust your tyre pressures regularly, and also before long journeys.

2 Less clutter means less CO₂ 

Clutter in your boot is extra weight in your car. By removing it, you could reduce your engine's workload. This will burn less fuel.

3 Drive at an appropriate speed 

Staying at or within the speed limit not only increases driver safety, it also reduces fuel consumption. At 110km/h you could be using nine percent more fuel than at 100km/h, and up to 15 percent more fuel than at 80km/h.

4 Less stopping and starting 

Every time you stop then start again in a traffic queue the engine uses more fuel. Keep an eye on the traffic ahead and slow down early by gently lifting your foot off the accelerator while keeping the car in gear. The traffic may have started moving again by the time you reach the vehicle in front, so you can change up a gear and be on your way.

5 Over-revving accelerates emissions 

Modern car engines are designed to be efficient from the moment they are switched on, so revving up like a Formula 1 car in pole position only wastes fuel and increases engine wear. Using your gears wisely by changing up a gear a little earlier can also reduce revs.

6 Idling is wasting fuel 

When the engine is idling, you're wasting fuel. If you're likely to be at a standstill for more than three minutes, simply switch off the engine.

 – Source: Defra UK

Expert answer

Hi Michael,

Sorry to tell you that the 156, as much as we love them, have not proven to be very reliable. The Driver Power Survey (carried out in the UK, but usually relevant to the same cars sold here) continuously ranks the Alfa 156 near the bottom for reliability. On closer scrutiny the much talked about electrical problems seem to be niggles rather than serious issues, though blown head gaskets and water leaks have been reported too.

As with any second-hand car, go for the example with the best service history, and make sure with the 156 that it had its 60,000-mile service done at the right time.

Same advice with the 146 really with regards to service history. It's especially important that it has had regular, on time timing belt changes so if there's no history showing this then look elsewhere. Smoky engines are a giveaway to expensive future bills, as are groans and creaks in the suspension. As with the 156, electrical niggles have been widely reported, though it seems that some cars have them and some don't...

In summary, if reliability is the most important aspect of this car purchase to you, then we'd not recommend either of these cars, but if you're already sold on the idea of one of these Alfas then we'd suggest you veer towards the 156.

Hope that helps.

Expert answer

Volkswagen aren't saying much at the moment, but you can take it as a given that the new model will feature the 1.4-litre TSi and I reckon (and this just a guess) that it will be the same one that is in the Passat at the moment. This is a reasonably new engine and I think it will be carried over to the replacement. The 122hp unit replaced the 1.6-litre petrol and for the first while I would see this engine being carried over.

As you can see from what they have done in the Polo, with the 105hp unit available, there is increasing popularlity and relevance for these smaller turbocharged engines and they definitely have a future. They offer a great way of keeping emissions down but at the same time returning pretty potent performance.

Everyone is being conditioned to buy diesel cars at the moment, but this new raft of small petrol turbocharged engines will offer a great alternative.