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 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 Rory,

First of all, there are a huge number of factors that affect your fuel consumption. Tyre pressures is a major one - ensure they're in spec. Next up is your use of the air conditioning and other energy-sapping devices like rear window demister. The weight you carry in the car and whether you have a roof box or roof bars fitted will also have an effect. Last, but certainly not least, is your driving style.

You've not told us which engine you have so we'll assume it's the 1.5 dCi 105hp, as that's one of the most common in Ireland. The official urban figure for that car was 6.4 litres/100km (44.1mpg) and the combined consumption figure is 5.4 litres/100km (52.3mpg).

Hope that's of some help

Expert answer

Hi Catherine,

That's an interesting one and the decision will probably come down to your personal preference. The Discovery certainly has a higher 'status' and it is a very good car, but a newer, highly specified Galaxy might be the logical choice. Both cars are relatively reliable and highly comfortable. The Galaxy has more space and probably more equipment, but that depends on the Discovery you're looking at.

One thing to be aware of is that the Discovery is likely to have higher running costs, from fuel, tyres, servicing and insurance to annual road tax.

Bear all that in mind and then take the Discovery for a good long test drive before you decide - and don't be tempted by 'too good to be true' prices either. Get a Cartell.ie history check to make sure there's nothing dodgy about the car you're considering.

Let us know how you get on.

Expert answer

Hi Shane,

If this is the exhaust noise we think it is then this is quite normal in the sportier MINIs - it was engineered in! The spark timing is retarded intentionally to allow a small amount of unburned fuel into the exhaust, where it then combusts giving a distinctive sound on the overrun. Many think it sounds sporty.

If it happens at other times then you may have a problem. Best to get it listened to by an expert.

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.

Expert answer

Hi Martin,

For the size of car and its capability off-road the ML 270 CDI has acceptable economy, but you'll get a shock if you're moving over from a regular car, as it's thirsty by that measure. The early versions do not have a great reputation for reliability so make sure you get any car you're interested in checked out thoroughly - and insist on a full service history.

Hope that's of some help

Expert answer

Hi Enda,

Despite the premium image, the Lexus IS isn't all that bad. Servicing rates are generally cheaper than other premium brands, which helps offset more regular service intervals. It's also a highly reliable model, so you should only be paying for routine maintenance. It's not too bad on fuel either considering.

Hope that helps

Expert answer

Hi Simon,

That is a lovely car, but you need to be prepared for the high running costs. Annual road tax alone is €1,683, while it's also heavy on fuel. No doubt it has low profile tyres as well, which are expensive to replace.

It seems to have very low mileage for the year, so make sure you get that verified. If it's right then it's still fairly fresh, but this generation of the 3 Series is expensive to maintain once the miles rack up.

Go into the deal with your eyes open and it could still be a great car for you.

Expert answer

Hi Eamon,

To us that seems like an unfair comparison given the price gap between the two, as the newer car will be far fresher in every way - but so it should be at that price. We'd be slow to recommend the older diesel Clio purely because of the mileage it has accrued already - and you plan on doing above average annual mileage on top of that. It would definitely start costing you money and, worse, could be out of action while being repaired - which would be a massive inconvenience.

In pure overall cost terms it might win out (taking into consideration the purchase price as well), but even so our advice would be to go with the petrol model - or look at alternative diesel options. There's a lot of choice out there.

Let us know if you want help finding something suitable.