среда, 17 июля 2013 г.

The production version will get the next-gen Golf bodyshell

The production version will get the next-gen Golf bodyshell

Volkswagen Golf Blue-e-Motion – VW’s riposte to the Leaf

26 July 2012



I’ve travelled a long way to meet Volkswagen’s prototype electric car, and at first blush it seems my journey has been in vain – because VW has brought along the wrong car. As the white Golf hatchback rolls across the carpark towards me I can’t help noticing the distinct rhythmic thrum of a V6 petrol engine.

VW Golf Blue-e-Motion - front viewBut the mistake is mine, of course. The car is plastered in Blue-e-Motion stickers and the noise is a fake – a postmodern pedestrian warning. The simulated sound even varies in pitch as the car speeds up, to complete the illusion, up until 22mph when it falls silent.

I can’t hear the virtual burble from inside without first dropping a window, so the electric Golf remains as silent, smooth, unruffled and refined as you might imagine a Volkswagen would be, rolling along without an engine.





This car isn’t a finished product, so elements will certainly change before a production version appears in 2014. Most noticeably, the bodyshell will be different, because by then the current sixth generation hatch will have been replaced by the MkVII.

VW Golf Blue-e-Motion - cutawayApparently the upcoming new monocoque has been born with battery power in mind, so the layout of components may vary from today’s work in progress. For now, the 26.5kWh air-cooled lithium-ion battery is split into three pieces – a long, thin section filling the centre tunnel, plus two broader pieces sitting under the rear bench and across the forward section of the boot floor. Altogether, they create a sort of fat-topped T shape. About 110 litres of boot space has been sacrificed to the cause, leaving about 240 litres for luggage.

All of the rest of the electrical gear – motor, charger, power electronics and cooling – have been shovelled under the bonnet, tightly packed alongside more prosaic items like aircon, power steering and brakes.



At present the electric Golf boasts a choice of charging point – there’s a socket lurking behind the VW badge up front, plus another on the car’s rear hip, under a conventional filler flap.

VW Golf Blue-e-Motion - chargingA selection of sockets seems like a good idea to me, given the unpredictable layout of charging posts with respect to parking bays. But chatting to one of VW’s engineers I learn that the finished car will probably have just a single inlet (for cost reasons, no doubt) and that the nose is the favoured location. There have been problems with ice during cold-weather testing, though, so there’s more work to be done.

VW Golf Blue-e-Motion - charging port

Starting the Blue-e-Motion is a wholly conventional affair – foot on the brake and turn the ignition key, until the instruments swing into life and tell you that the car is ready. Then slot the auto-style transmission lever into D, handbrake off, and we roll backwards.

It turns out there’s neither hill-hold nor forward creep baked into the current car. But with a dab of throttle we get away in the right direction, smoothly and cleanly.

Unsurprisingly, the Golf Blue-e-Motion reminds me of the Nissan Leaf. The two are broadly similar in conception, probably weigh a similar amount, and can call on roughly the same power – the Leaf’s motor is rated at 80kW (107bhp), the Golf’s at 85kW (114bhp) – and both will zip to 62mph in about 12 seconds. The Golf has more talkative steering than the Leaf (which isn’t difficult) plus, due to differences in battery packaging, a lower seating position, making the VW much more involving to drive.



There’s also more for the driver to do in the Golf. Volkswagen has come up with a roster of different profiles for energy recuperation – an electric car’s ability to feed energy back to the battery when slowing down, by running the motor as a generator. The Blue-e-Motion boasts five different modes, which feel like five different levels of gentle braking as you lift off the throttle.

VW Golf Blue-e-Motion - drivingThe least pronounced regenerative braking effect – which actually feels like no braking at all, a sort of gliding mode – is the default, accessed by simply leaving the car in D. The strongest regeneration is gained by pulling the big lever back into B, which is a braking mode suitable for descending steep hills. Simply coming off the throttle in this mode will light up the brake lamps, to avoid unwanted rear-end attention.

Between the two are three additional profiles, accessed with the lever in D. A pair of paddles affixed to the steering wheel allow the driver to step up and down through all four of the D profiles, from a little braking to a lot.

It’s complex, but once you attune to the differences you can set the car up just how you like it, for the road conditions of the moment. As an innovation, I like it a lot.



In common with the Leaf, VW employs the centre-console screen to keep the driver informed about energy use and the state of charge, while the Golf does without Nissan’s digital dashboard, instead providing a pair of conventional analogue dials adapted to provide an economy meter, range prediction and battery gauge as well as road speed.

VW Golf Blue-e-Motion - instrumentsIt’s too early for VW to say much about likely pricing for the Golf Blue-e-Motion, although spokespeople did admit it will likely pitch in the same ballpark as the Leaf. No doubt we will get a big clue before the electric Golf arrives, when Volkswagen starts to market a different car as its first production EV. The VW Up Blue-e-Motion, also known as the e-Up, is expected to arrive in 2013.


VW Golf Blue-e-Motion - side view
We don’t yet know if VW will follow Renault in offering a battery lease to lower initial entry price, or do as Nissan does and keep ongoing costs to a minimum beyond a higher purchase hurdle.

Or, if the marketers are as inventive as the engineers with their paddle-shift braking, maybe VW will come up with a sales model nobody else has yet considered.



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