Expert answer

Hi Marc,

You've not told us which engine you have so we're going to assume a 2.0 TDI diesel. No matter which version of that engine it is of that age, the change interval is 210,000 kilometres. We'd suggest doing it more frequently if the car is used mostly in urban environments and stop-start traffic.

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Hi Rory,

Assuming you really do mean the 1.5 TDCi diesel in the latest Focus (which was only launched in 2015), then Ford recommends every 180,000 kilometres or 10 years. We's suggest earlier if the car is used in town a lot in stop-start traffic. That applies to all 95hp and 120hp versions, as well as the 105hp ECOnetic model.

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Hi Stephen,

You've not told us a lot about the car so we've made some assumptions. The earlier versions had a change interval of 120,000 kilometres and the later models were 150,000 kilometres, with the belt tensioner changed every second time in both cases.

As ever, if a car is used in a lot of stop-start, heavy traffic situations, we'd advise drivers to change their belts more frequently than the car makers suggest.

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Hi Naseem,

If you’re driving the M50 a lot, it probably  depends what time of day… Post-10am or pre-4pm and you’d probably get up enough speed to be able to keep the DPF clear and so it wouldn’t be a problem, even with the relatively low mileage. If you’re stop-start driving and not getting into a proper heat cycle, then no, go for petrol instead. Ford has that brilliant little 1.0-litre EcoBoost turbo petrol engine.

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Hi Gerry,

Of the two, I’d prefer the 1.3 diesel. Neither is an especially refined engine by modern standards, but the 1.7 is a terrible old thing – incredibly noisy, rattly and prone to stalling when driving in stop-start traffic. The 1.3, if you get it with the 90hp output, has decent performance, is very economical and doesn’t seem to give too much bother. Great that you’re doing your own servicing, but beware of what effect that may have on the resale value as most buyers prefer to see a healthy book of dealer service stamps.

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Hi Max,

Well, the official combined fuel economy figure is 51.4mpg, but that sounds a bit optimistic to us. Doing short journeys shouldn’t be a major issue as it’s a petrol engine, but a bit of gentle driving should get you at least past the 40mpg mark, unless you’re stuck in stop-start traffic all the time. I wouldn’t bother using premium petrol, as you’re just wasting your money. The engine is designed to work on standard 95RON pump fuel, so just use that, but make sure you buy from a reputable supplier.

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Hi Declan,

It’s a tough one. Generally I’d say for the moment, diesel is still best for that kind of mileage, especially day-to-day. A model with a good stop-start system should help keep the consumption down in heavy traffic (Mazda’s system on the 6 2.2 diesel is especially good) and those long motorway miles are just what diesel was designed for. A plugin hybrid is really for those doing short urban journeys most days, with only an occasional long trip, so I don’t think any would be really suitable for you. It would be worth looking at a new-shape Toyota Prius hybrid though – we managed to average 60mpg in one recently over the course of a week, including several long motorway runs, so it’s worth thinking about.

Expert answer

Hi John,

No, it’s not just another cost to the consumer. Stop-start systems are designed to prevent the car from running the engine unnecessarily at standstill when doing so would be at its most wasteful of fuel. After all, if you’re not moving then what is the point in having the engine on? Stop-start systems are specially designed with either a beefed-up alternator or an integrated starter/generator so that it can handle multiple stops and restarts in rapid succession, and it’s estimated that on an average car, stop-start can save as much as ten per cent of overall fuel consumption – not to be sniffed at, never mind the benefits to city-centre air quality.

Admittedly, the car makers have brought in stop-start to bring their cars' official CO₂ and fuel consumption figures down, and the benefits are only really felt if you are stopping and starting regularly. If you spend all your driving time on the motorway then you won't use the system at all.

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Hi there,

Right, I'll be honest - we had to get on to Nissan Ireland for help with this, but it came through in spades.

Over and above the SV model, the SVE added Xenon headlights, Intelligent Key, illuminated passenger sunvisor, seven-speaker BOSE audio system, 17-inch alloys and rear parking sensors.

The engine has a timing chain, not a belt, so it doesn't need replacement,  but it does need to be inspected at regular intervals. Any Qashqai with a full service history should be fine on that score.

In terms of economy, the 1.6 petrol Qashqai got 44mpg overall while the 1.6 diesel got 55mpg, or 60mpg if it was fitted with the stop-start system.

Hope that all helps

Expert answer

Hi Barry,

It depends on whether it's the 90hp versions (with CO₂ emissions of 109g/km) or the 134hp stop-start version (CO₂ of 94g/km). It'll be either 15 or 16 per cent of the open market selling price, which is around the €16,000 mark - so around €2,400 to €2,500.