Even though this model Camry has an official combined fuel consumption figure of 7.9 litres per 100km, the exact number of kilometres you get from each tank of fuel will depend hugely on how and where you drive the car. If your driving is all around the city and suburbs, you might average, say, nine litres per 100km. If it’s all freeway work, then that figure may tumble to as low as seven litres per 100km. Drive the car really gently and you might even get that figure to drop into the sixes.

In any case, the (higher) city figure means the Camry’s 70-litre fuel tank should take you around 750km before you need to fill up. On the highway, meantime, the same 70 litres should carry you almost 1000km before you need to start looking for a petrol station. In reality, of course, the only direction with such projections is down, and every cold start, traffic jam and headwind will take kilometres off those figures.

The extra purchase price of a diesel engine over a petrol one is only the start of the cost comparison. Generally speaking, diesels will cost a bit more to service (it depends on the make and model) and that’s if you don’t have problems with the diesel particulate filter (DPF) or soot build-up in the engine’s intake system that needs to be manually cleaned out.

You also need to consider your driving habits to decide whether a diesel is right for you. As a rule of thumb, if you don’t go for a decent drive at highway speeds for about an hour or so at least once or twice a month, then a diesel is not for you. Using a diesel engine exclusively for short trips at suburban speed can often see the DPF requiring more attention than it should, and that equals cost.

Also, modern petrol engines have really closed the fuel-economy gap that the diesel once enjoyed. The fuel consumption difference between the diesel Tucson and the petrol version is likely to be about a litre per 100km (based on the official combined figure for each). That means that even at $2 per litre (and based on the $6000 difference in price you’ve quoted) you’d need to drive 300,000km before the diesel began to pay for itself in terms of fuel saved. I’m not sure there’s a full $6000 separating the two versions of the Tucson, but even so, you get the idea.

It’s unlikely that Toyota Australia would introduce the Crown down under. That car is more or less a Japanese domestic-market vehicle and is considered too narrow for Australian (and North American) tastes. But plenty of Aussies have imported their own Toyota Crowns in recent years and, in fact, there are businesses in many locations devoted to importing these vehicles and selling them here. With that in mind, there’s less risk in buying an imported Crown than in owning some parallel (unofficial) imports because there’s a whole industry out there involved in parts and service for the model.

Perhaps another way to go would be to have the seats in your car re-padded to better suit your requirements. Maybe even a set of plush seat covers would provide the extra layer of comfort you’re after. If not, test drive the current-model Toyota Camry; it’s very Lexus-like in its refinement and comfort and, thanks to modern packaging, it’s huge inside. The hybrid version is excellent value and if more people test-drove the Camry, we reckon there’d be a few less SUVs sold.