Expert answer

Hi Sean,

Nice choice of cars to be thinking about. Before we look at the stats of the cars, the driving experience in the 3 Series vs. the Audi A4 is quite different - and will be the deciding point for many, so please do try to get a test drive in examples of both. That's the case whether you go for the older 3 Series Coupé or the newer saloon.

Personally, I prefer the way a 3 Series of this age drives in comparison to an A4. It's more 'dynamic' and engaging thanks to the rear-wheel drive layout. However, not everyone likes that and I've heard non-enthusiastic drivers call the feeling 'skittish'. There is no doubt that a front-engined, front-wheel drive car like the Audi A4 will find more traction on snow and ice than a rear-wheel drive BMW (assuming neither has winter tyres), but our climate is too mild for that to be a serious car-buying priority.

In terms of running costs, the early versions of the E90 BMW 320d saloon and Audi A4 2.0 TDI 140 are very close and, as you'll be buying a car registered before 2008 with that budget then tax will be the same, as it's based on the engine size. The E46 320Cd coupé is a little heavier on fuel, but not much.

The 320d saloon has the most powerful engine of these three, though there's not much in it really.

Both saloons are generally quite reliable, though we'd recommend getting full service histories and getting mileage checks with Cartell.ie as each car has its own known issues that crop up from time to time - like turbo issues on the BMW and burning oil in the Audi. The E46 coupé is also reliable, though it's built on older architecture so won't be as modern in general.

One final thing to bear in mind. While the S line Audi specification is highly tempting, it comes with firmer suspension, which may not be to everyone's taste. Test drive it before committing. Likewise an M Sport version of the BMW 320d, though you may not find many of those within budget.

Now, whether you should consider petrol instead of diesel is a whole other story. The decision really should come down to your average mileage. The diesel models will definitely be far more economical on a long run or commute, but not in town. Likewise, you can get lower capacity engines in the petrol cars bringing your annual tax bill down.

If you want to discuss the latter point in more detail come back to us and we'll go through options.

Hope this all helps

Expert answer

Hi Susanne,

We really like the Audi A1. Despite its smaller size it'll feel like a big step up in terms of quality etc. from your 2002 BMW 3 Series. A nearly new model will cost you very little in terms of servicing as well and there's a wide range of efficient petrol and diesel engines. Our favourite is the 1.2 TSI petrol, though if you cover a high average mileage (say greater than 15,000km a year) then it's worth looking for the 1.6 TDI diesel version instead.

If you'd like more detailed assistance to find one that suits your budget feel free to get back in touch.

Expert answer

Hi David,

The short version is, I’m afraid, you’re going to struggle. Small cars such as that don’t generally sell well with diesel engines, as the petrol variants are very economical already, and the diesel versions are much more expensive. We’ve found one on Carzone.ie (a 2005 VW Polo TDI),  but that was literally the only one we could find on sale that fits the bill. You might want to consider upgrading to a larger car — there are lots of diesel Golfs etc around in your price range.

Expert answer

Hi Pat,

You've not told us whether it's petrol or diesel. If diesel then definitely worth testing the glow plugs. That sounds like the most probable reason for this.

Tell us more about it if that doesn't help.

Expert answer

Hi there,

It depends on your driving style, and on where you do most of your driving. If you’re in town all the time, and stuck in stop-start traffic, then it could be worth tracking down a Toyota Prius or a Honda Insight hybrid, bot of which should sip fuel in such circumstances. If you’re up on main roads and motorways all day long, then diesel is still a good idea. A VW Golf 1.6 TDI BlueMotion would be a solid bet for maximum economy then, although if you fancy something a little more stylish, a MINI Cooper D (with the 1.6 diesel engine) will crack 60mpg on a long run.

Expert answer

Hi Joe,

We'd expect a well-maintained version to return up to 35mpg on average - that's 8.1 litres/100km in new money...

Hope that helps

Expert answer

Hi Maria,

The vast majority of the BMW 3 Series sold in Ireland are rear-wheel drive only. The current version is available only in 320i petrol guise with the company's 'xDrive' four-wheel drive system. That may change in time.

Hope that helps

Expert answer

Hi Patrick,

We assume you mean the latest Mercedes-Benz E 200 BlueEfficiency. With the seven-speed automatic gearbox this uses 6.5- to 6.9 litres/100km (43.4- to 40.9mpg) depending on the version. It's either Band C or D for tax (depending again on version), costing €330 or €481.

If you have a specific model in mind come back to us and we'll answer more precisely.

Expert answer

Hi Lins,

We're big fans of the Mazda5 in general. That model is well-equipped and lovely to drive. Make sure you go for a 2.0-litre diesel instead of the 1.8-litre petrol to keep your running costs down.

Hope that helps.

Expert answer

Hi Christopher,

First things first: go for automatic. The fuel economy won't be as good, but there are far more on the market and the manual version retains the foot-operated parking brake, which is madness. It should return about 35mpg.

In general it's a reliable car, though check all electrics and if the gearbox is jerky walk away. Also listen out for suspension knocks. Insist on a full service history or find a car that has it.

Hope that all helps.