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Hi Dave,

Quite a bit actually - that 120hp diesel is pretty underpowered in a car as bulky as the A4 and you'll probably notice it most in fuel consumption. You'll have to work it so hard to keep up with traffic that you'll find it quite thirsty. Upgrade to the 140hp if you can.

Relevant reviews:

Audi A4 2.0 TDI 140 review (quattro model)

Audi A4 2.0 TDI 177 review

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Hi Catherine,

Not much I'm afraid - probably about €700 to €1,000.

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Hi James,

I'd normally say that at the 20-25k mark you're on the cusp of needing diesel but with that big a price gap between the two I'm minded to say go with petrol. 

The only caveat to that is what kind of mileage you're doing. If that's 25k of endless motorway miles then diesel could still be worth a look as a 318d will easily hit 60mpg on a long run while a 320i will struggle to get above 50mpg.

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Hi Albert,

Normally I'd say about €11,000 to €13,000 depending on condition, but you're talking about a petrol model and no-one wants those at the moment, so I'm going to have to say around €10,000.

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Hi F D,

There are some small differences. The three-door A3 sits on 2,601mm wheelbase, while the A3 Sportback (the five-door hatch) has a 2,636mm wheelbase so there's a bit more room in the back. The A3 Saloon has a wheelbase that's fractionally longer again, at 2,637mm, but that's a negligible difference, so really, it has the same rear seat space as the Sportback. There's a significant difference in boot space though. Both hatchback versions come with a 380-litre boot, or a 340-litre one if you opt for quattro four-wheel drive (the rear diff has to go somewhere, after all). The saloon has a much bigger boot though, at 425 litres for the front-drive version or 390 litres for the quattro version.

Read our Irish road test of the Audi A3 Saloon here

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Hi Edward,

We found several by doing a search on www.partfinder.ie - you can then choose which is closest to you as that's much too heavy a thing to put in the post!

Best of luck

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Hi John,

OK, there's a balancing act to be done here. There's no doubt that the CO₂-driven diesel stampede since 2008 has driven up the values of second hand diesel cars and driven down the values of their petrol equivalents. However, that is starting to change, and cannier buyers (helped in some part by investigations and comparisons by the CompleteCar.ie team - blowing our own trumpet etc. etc.) have shown that the overall cost of buying and running a petrol engined car can actually be lower than that of a diesel, especially for those drivers on relatively low mileage like yourself.

In that sense, I'd be well in favour of getting the petrol one, but there is a caveat to that - the A4 is very much a business market car, and therefore most of its prospective buyers, new and used, will be expecting to see a TDI badge on the boot. If you're buying on a lease or a PCP with a guaranteed future value, then that's not such an issue, but the answer is yes, you could well lose out a little on depreciation over a few years. Probably not a lot, but it's a moving target at the best of times.

Can I suggest this? Instead of an A4, have a look at the A3 Saloon. It's admittedly smaller, but it is also prettier, better to drive and good enough to win Family Car of the Year from the Association of Professional Motoring Press (APMP). It can also be had with the excellent little 150hp 1.4-litre turbo petrol engine and should be somewhat less sensitive to the diesel/petrol tug of war when it comes to second hand values.

Let us know which way you go anyway.

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Hi Maria,

I presume you're talking about a first generation Mazda3, seeing as most of the second-gen models came with diesel power. The official economy for a 2005 model year Mazda3 1.6 petrol is 39mpg with CO₂ emissions of 172g/km.

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Hi Nelius,

Cracking car the original Mazda6. One of the best-to-drive saloons ever built and the good news is you're looking at mostly pros, and very few cons. The only real mechanical weak point is the clutch - we've heard of them failing at as little as 50,000km so check to make sure that the action is smooth and not too heavy and that the gear changes are crisp and quick. Any slipping or smell should set off alarm bells.

Other than that, there are a few recalls that you need to make sure were attended to (leaky fuel lines, dodgy fog lamps, brake warning light and oil seals) and it's worth checking to make sure that the suspension and steering are in good fettle and that there's a good set of high-quality tyres on the car; the better to enjoy that wonderful handling balance.

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Hi Peter,

As I guess you already know, Shane, Dave, Paul and myself from CompleteCar.ie are all on the APMP voting jury for Car of the Year, so we'll take this point by point if that's OK.

The Audi A3 Saloon was the model specifically being looked at, and while it's certainly at the pricey end of things for many families, more and more family buyers are being tempted in by the attractive repayments and resale figures offered by the German 'Big Three' premium brands. As for cabin and boot space, the A3 sits roughly between, for instance, a Golf and a Passat in this instance, and isn't far off the cabin space of  the current Audi A4. As a father of two, I've had my family out and about in various A3 models and can confirm that they're perfectly acceptably spacious.

It's a similar case for the Mercedes-Benz C-Class. Size-wise, it's pretty much spot on a rival for the Passat or Mondeo. Perhaps it's a little tighter inside, but not by much, and that's the price paid for a less space-efficient rear-wheel drive platform. Again, while it's at the expensive end of things for a family purchase, there are plenty out there defecting from the more traditional 'mass-market' brands such as Ford, Opel and Toyota to get themselves a slice of the premium action. Once again, it's often down to the tempting finance packages on offer.

As for the Outlander, it is, strictly in size terms, somewhat in-between things. Taking the BMW X5 as an example, it's slightly shorter (200mm) overall, but has a similar wheelbase measurement and it's slightly larger than the next BMW down, the X3. We judged that, given its overall exterior dimensions, its large boot space and the availability of a seven-seat version when specified with the diesel engine, that Large SUV was the best fit. A perfect fit? Perhaps not, but given the continual fracturing of the car market into ever smaller and more narrowly defined niches, it is close to impossible to find a perfect market segment for every car on sale without having an award 'for everyone on the audience'. We put the Outlander PHEV into the Large SUV category because we felt it would compete strongly there. Seeing as it took two awards home on the night (its PHEV drivetrain took the APMP Innovation Award) it looks like we were right.

The categorisation was discussed long and hard by the membership and somebody somewhere will always disagree.