Living with it: Volvo S60 T8

How do the Volvo plug-in hybrids' eye-opening fuel-economy stats stack up in the real world? We're running one for six months to find out

Volvo S60 T8

Report 2: Efficiency unraveled

We know that efficiency is a key reason why owners of conventional cars are turning to pure electric and plug-in hybrid ones, so it was also a key reason why we added the Volvo S60 T8 to our fleet. 

This 400bhp compact executive saloon is efficient compared to just about anything with an internal-combustion engine in terms of keeping the taxman’s hands off your cash, and the on-paper fuel efficiency is also sparkling, especially in the context of cars with similar performance. What’s always less clear is how efficient any plug-in hybrid is in the real world, where the overwhelming majority of owners will be driving them.

So, with 2,500 miles under our belt, we’re starting to get a picture of the T8’s fuel efficiency and, crucially, how much returns depend on usage patterns. With our car's optional Polestar Performance Software Optimisation (£745) upgrade, the 2.0-litre turbocharged and supercharged petrol engine sends 314bhp to the front wheels and the 86bhp electric motor drives the rears with power from the 11.6kWh battery (of which 9.9kWh is usable).

The system makes the electric motor’s torque and the petrol engine’s power available simultaneously, helping deliver the headline-grabbing performance figures, plus four-wheel-drive traction should you need it.

Officially, the S60 T8 has an electric-only range of 36 miles but in the real world, the petrol engine will always cut in to help if you prod the throttle with any vigour or if the rear wheels start to spin. This is the case even in 'Pure' mode, which favours electric running as much as possible. Even with the petrol engine chipping in, you’ll be doing well to have any battery charge left after 30 miles of mixed driving. And where you might see 65-70mpg for that first battery-assisted stint, that number quickly drops to 25-30mpg once the battery is depleted.

All this means that how you use the car has a huge bearing on efficiency. By way of illustration, we managed 47mpg in the S60 on a 316-mile tank with 79.5kWh of battery charge added. That’s fairly typical of our experience in a routine that involves a mix of urban and B-road driving plus the odd 30-70-mile motorway trip. Over 45mpg is very good going or a 400bhp executive saloon, and that kind of comparison works even better for the S60 T8 once the tax savings are factored in. Although we'd caution anyone against thinking of the S60 T8 as an alternative for a BMW M3: a sports saloon it is not. More on that next time...

Report 1: Introducing our S60 T8

If you travelled back in time a decade brandishing the spec sheet of the Volvo S60 T8, the numbers on it would have jaws dropping as though it were an account of Donald Trump’s rise to the US Presidency. This is a compact executive saloon with 400bhp that can blast from 0-62mph in 4.4 seconds and yet return between 122 and 176mpg, emitting just 42g/km of CO2 in the process. 

Even in 2020, when we’ve grown accustomed to the remarkable on-paper capabilities of electrified vehicles, the S60 has quite the CV. The question, as tends to be the case with plug-in hybrids, is how does that on-paper prowess translate to the real world. This is exactly why we granted the S60 T8 an extended interview on our long-term test fleet.

The car is specced in the R-Design Plus trim level with Bursting Blue metallic paint and a Slate Grey leather interior. Inside and out, it exudes a kind of understated, sporty style that's hard not to appreciate.

Volvo is getting its designs right more often than not at the moment – just at the time when some of its premium German rivals are coming in for criticism in this area – setting itself up as an appealing alternative in more and more people’s eyes.

Of course, there’s more to selling premium-badged cars than a set of ‘Thor’s Hammer’ headlights and an IKEA-cool cabin. The S60 needs to excel across the board and our recent twin test of this very S60 T8 against the BMW 330e did expose some weaknesses, not least of which was how much the Volvo costs.

With the Polestar Performance software optimisation (an extra 15bhp and a more responsive driving mode on the car’s menu), the smartphone integration kit (Android Auto and Apple CarPlay), metallic paint, the Xenium Pack (panoramic sunroof, 360-degree surround-view parking camera and automatic parking), the Intellisafe Pro Pack (auto-dimming mirrors, adaptive cruise control and Intellisafe Surround safety aids) and the Convenience Pack (power-folding rear seat backs and luggage hooks in the boot), our test car costs just over £55,000 – quite a jump from the £49,805 list price. 

This was a big barrier to it overcoming the BMW in our twin test and now the question is how much that looming sticker price colours our impression of the car during a long stint in the driver’s seat.

Volvo S60 T8 R-Design Plus

On fleet since: December 2019
Mileage: 1,926
MPG: 46.2mpg 
Price new: £55,250 as tested (£49,805 OTR before options)
Engine: 2.0-litre turbocharged and supercharged petrol, electric motor with 11.6kWh battery, 400bhp combined
CO2/tax: 42g/km /£455
Official economy: 123-176mpg
Cost of a full charge at home: £1.39 (at 14p per kWh)
Options: Bursting Blue metallic paint (£975), Xenium Pack (£1,800), Intellisafe Pro Pack (£1,625), Convenience Pack (£300), Polestar Performance software optimisation (£975), smartphone integration kit (£250)
Annual company-car BiK cost at 20/40%: £1,592/£3,184
Insurance group: 42
Any problems? None so far