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Vauxhall Insignia Grand Sport fuel economy puts up strong case against petrol cars: long-term test review

BIK List Price
Vauxhall Insignia BIK list price
BIK Percentage
Vauxhall Insignia BIK Percent
Vauxhall Insignia CO2
Combined MPG
Vauxhall Insignia MPG


July 2018 

Vauxhall may be slightly optimistic about the Insignia's fuel economy, but it would be impossible to replicate in a petrol car. 

The Insignia’s consistency in regularly achieving more than 60mpg cannot be over-emphasised.

You may be familiar with economy runs where drivers deliberately try techniques that should deliver better fuel consumption than official figures.

This ‘who can be the most frugal?’ contest is also sometimes played out at car media launches when, given we journalists are so competitive, it’s difficult to resist the temptation to deny a writer from a rival publication the glory of winning.

That said, without resorting to this kind of frugal driving, the Insignia Grand Sport has still achieved impressive figures.

Most of my journeys in it have been long – 100-plus miles.

I travel locally occasionally, but it’s usually driven to airports or meetings.

Often there is congestion on these routes, with a few miles of slow-moving traffic, so it isn’t as if the car and its 136PS diesel engine escapes the challenges of urban driving.

The trip computer on the Insignia’s last tank of diesel read 72.1mpg.

We know from an earlier update that the car is a little optimistic about its achievement. But measuring brim to brim, it still achieves 68.5mpg.

With customers deserting diesel for a variety of reasons it’s worth pointing out that it would be impossible to achieve fuel economy like this in a similar-sized petrol car in everyday driving.

And, unless every journey was short and urban-based, it would be extremely unlikely in a petrol hybrid, too.

Simon Harris 

June 2018 

WLTP ups the Insignia Grand Sports' BIK by 5% but fuel consumption remains impressive, says Simon Harris 

Had you taken delivery of an Insignia Grand Sport as your company car at the same time as us last spring, you would have chosen a large family hatchback with competitive CO2 emissions of 114g/km.

At the time, the Insignia fell into the 24% BIK tax band. And, if it will be your company car for the next few years, your BIK tax will rise progressively, with a spike for 2018/19 because of the change in the diesel supplement from 3% to 4%.

Essentially, the first year BIK tax bill for a 40% taxpayer was £2,183.53 for the car without the options fitted.

However, were you to take delivery of an identical model now, you’d be facing a significantly higher tax bill.

This is because the car has now been recalibrated under the new WLTP test cycle, with a correlated CO2 emissions figure. It now has emissions of 124g/km and falls into the 29% bracket for BIK.

Inflation and a five percentage point higher BIK tax band as the starting point will give a 40% taxpayer a first year bill of £2,813.15 – more than £50 extra a month.

Under WLTP, intended to be more reflective of real-world driving, the car now has an official fuel consumption of 60.1mpg on the combined cycle.

But, during the past few days, I’ve more or less matched the old NEDC figure of 65.7mpg. This means CO2 emissions would have been more in line with the original 114g/km.

The Insignia’s fuel consumption has been impressive for such a large car that never feels lacking in performance. It’s a surprise that it has been reaching the old NEDC figure, let alone bettering the more ‘realistic’ WLTP data.

Simon Harris

May 2018 

After taking the Insignia to the dealer network, Simon Harris reflects on the future of Vauxhall. 

It’s a long time since I’ve spent any significant time behind the wheel of a Vauxhall. It’s even longer since I had the opportunity to interact with its dealer network.

Recently we received a notice from Vauxhall that a safety check needed to be carried out on the rear seatbelts of our Insignia Grand Sport, and perhaps with claims of slow reactions over fire risks with the second-generation Zafira, the company is extra keen to ensure any problems are dealt with promptly. 

While Fleet News is located on the outskirts of the sprawling Peterborough metropolis, I’m based in the Lincolnshire fens.

It meant that rather than using the main dealer in Peterborough, around 15 miles away, it was more convenient for me to travel just six miles to Taylor’s of Spalding.

Set along a busy main road in the town, the facility feels as modern as the one in Peterborough, and the friendly service desk staff were able to accommodate me within 48 hours of my call.

The work was carried out within 10 minutes, and I was on my way again with barely enough time to drink my complimentary hot chocolate. There was no problem with our car.

Much has been written about Vauxhall dealers recently, with an expected downsizing of the retail network following the brand’s takeover by PSA.

It was reported in April that contracts would be terminated and retailers would need to reapply to take on the franchise again.

No doubt dealers will act in their best interests, but it would be a pity if the network was to lose any of its quality outlets.

Simon Harris

March 2018 

The Grand Sport name might be daft but the performance is very impressive, as Simon Harris reveals. 

There are so many new cars launched each year that it’s impossible, even for someone whose job often involves evaluating the latest vehicles, to try every one in timely fashion.

So I was happy to finally get behind the wheel of the latest Vauxhall Insignia this month, and put around 700 miles on it.

While the Grand Sport name is a bit of a daft alternative to hatchback, the car is, for the most part, very impressive.

I was surprised that our SRi model was priced at just under £23,000 (of course, most large end-user fleets will pay much less) and by the value of some of the options fitted.

For example, the head-up display is priced at £290. These displays can give cars a real premium feel. This one shows speed, traffic sign and navigation information so drivers can see the figures without taking their eyes off the road. Compare this with a premium alternative such as a BMW 3 Series, which would set you back £825. 

The Insignia’s sophisticated, automatically adjustable LED headlights at £1,010 are a bit steep, but priced in line with rivals, although we’d probably leave those well alone.

It’s also disappointing to see car manufacturers making money out of flat paint finishes. It used to be that metallic paint, or black paint commanded a premium. 

On the Insignia, only Aegean blue is described as ‘solid’. Non-metallic summit white, and lava red (as on our test car), are listed in brochures as ‘brilliant’ (no more brilliant than other solid paint), and command a premium of £285.

Someone please put a stop to this.

Simon Harris


February 2018

Luke Neal finds that automatic phone locks and accidental lock-outs are easily resolved with the Insignia 

Our Insignia comes equipped with Apple CarPlay which Apple calls ‘the ultimate co‑pilot’.

It says: ‘CarPlay is a smarter, safer way to use your iPhone in the car. CarPlay takes the things you want to do with your iPhone while driving and puts them on your car’s built-in display.

'You can get directions, make calls, send and receive messages, and listen to music, all in a way that allows you to stay focused on the road.’

When entering the car, my phone automatically connects via Bluetooth to the Insignia in seconds. Done. But if I plug my phone in to charge, it automatically disconnects my phone from the car and activates Apple CarPlay.

This, currently, can only be used by manually unlocking my phone to access its functions. It’s very frustrating.

I recently received a call while driving but couldn’t answer it without finding my phone and unlocking it first which prompted me to look through my CarPlay connectivity options. 

It’s worth noting that drivers do have the option for CarPlay to function while the phone is locked, which might be useful for some, or to forget the connection completely and stick to the Insignia’s perfectly good Bluetooth phone connection and sat-nav which are already built in. 

As I don’t want to access the majority of my iPhone’s functions while on the move (and I also find CarPlay sometimes slow to react) I have chosen the later.

On a recent trip, I mistakenly locked the Insignia keys in the boot and the keyless entry wouldn’t function. 

After a few moments of panic, I realised this was because the boot was only caught on the first latch and not fully closed.

Once I had pushed it tight shut, the keyless entry was able to recognise the key was in close range and allowed the boot to open. Phew!

Luke Neal

January 2018 

Luke Neal debates whether the Insignia's head-up-display is an important addition for business drivers in his long term review. 

Our Insignia is equipped with a head-up display (£290) which is optional on all Insignia Nav models with the exception of the Design trim level. 

It’s the first long-term vehicle I’ve driven that is fitted with one.

As you are probably aware, a head-up display (sometimes known as HUD) presents data without requiring users to take their eyes off the road.

It was developed for military aviation so pilot’s eyes do not need to refocus to view the outside after looking at the in-cockpit instruments.

The Vauxhall display shows current speed, rpm, gear change indicator and collision warning but will also display turn-by-turn directions when navigation is in use. It feels like an important safety addition, keeping drivers’ eyes facing forward. 

Previously I’ve often wondered whether a head-up display is just an annoyance or distraction. 

Not so. In fact, quite the opposite, I find I rarely even notice the head-up display and, instead, look to the car’s conventional speedometer and navigation screen for information. 

However, a colleague has recently commented on how useful he finds the head-up display. Whether it’s an important addition for business drivers may well be judged on a case-by-case basis.

Another important safety system included on our car is lane departure warning with lane assist.

It comes as part of Driving Assistance Pack One which also includes: 

  •  Forward collision alert with automatic city emergency braking
  •  Following distance indicator
  •  Traffic sign recognition

Lane departure is an impressive system which keeps the car between the white lines should you need it. If you change lanes, without indicating, the system will fight to keep you within your lane until you have crossed the white lines.

It can be switched off by a dash-mounted button or overridden when the indicator is used. 

Luke Neal 

November 2017 

After two months of testing, Luke Neal has grown attached to the Vauxhall Insignia Grand Sport.

I have received positive comments on its premium good looks and the 1,845 miles have seen it begin to loosen up nicely. 

It has an impressive turn of speed for a relatively small (1.6-litre 136PS eco tech) diesel engine and is returning a healthy average fuel consumption of 55mpg which is impressive compared to the Equa Index ‘real world’ figure of 47.9mpg but still shy of the manufacturer’s claimed 65.7mpg. 

On the subject of fuel (and it’s only a minor point), the fuel flap on this car is huge.

I was expecting to at least find the AdBlue filler inside to justify its enormous size, but there is nothing but the fuel cap.

I will have to consult the owner’s manual to locate the AdBlue filler as I haven’t been able to find any details online.

Our VX line trim car has many optional extras fitted over and above the standard and with cold weather just around the corner, I am pleased our car has the Winter Pack Four as an optional (£410) extra. 

The pack includes three stage-heated front seats and a heated front windscreen which, from past experiences, will be an absolute joy on frosty mornings. 

I have recently discovered that the heated seats can be set to automatically activate via the on-screen vehicle settings menu so I have already begun enjoying their benefits. 

The car also has a heated flat-bottomed leather steering wheel which is part of the VX line trim rather than the Winter Pack, although it is available as an optional extra on other Insignia trim levels.

Luke Neal

October 2017 

The first test of the Vauxhall Insignia Grand Sport reveals it to be good looking, well specced and fuel efficient.

We first drove the Insignia Grand Sport back in March.

It’s certainly a good looking car and editor Stephen Briers said at the time: “We were always a fan of the underrated Insignia’s exterior and the new car retains its position as one of the best looking in its class.” 

Our long term vehicle is an SRI VX Line Nav, costing £22,960 on the road.

It comes well equipped with Navi 900 Intellilink system and driving assistance pack one, which consists of: forward collision alert with automatic city emergency braking, following distance indicator and lane departure warning with lane assist.

It also has the VXR styling pack (sports-style front and rear bumpers, side sills and visible tailpipe) and of course, Vauxhall OnStar.

We also opted for additional  extras of head-up display, intelligent headlights, DAP 4, wireless charging, eight-inch instrument display, brilliant paint and winter pack four (heated front seats and windscreen) pushing the price up to £26,125.

Under the bonnet is a 1.6-litre diesel engine which develops 136PS and 320Nm of torque. It isn’t the most efficient unit in the range (that’s the 1.6 110PS turbo diesel with CO2 emissions of 105g/km).

But with CO2 emissions of 114g/km and combined fuel consumption of 65.7mpg it’s likely to be the best balance of performance and efficiency.

Inside, the dashboard is home to two eight-inch screens, the first is the touchscreen Navi 900 intellilink display which controls the audio functions, navigation, bluetooth and vehicle settings as well as Apple Carplay and Android Auto. 

The second is a digital instrument display which, along with the speedometer and rev counter can be customised to display fuel economy, average speed, tyre pressure information and oil life.

The interior has a premium feel, there is a good blend of leather and soft-touch materials, smart metallic detailing and ‘mood’ lighting.

There is plenty of legroom for both front and rear seat passengers and the boot’s 490 litres feels cavernous.

Economy-wise it’s returning an average 56mpg (just 10mpg below the official figure).

Luke Neal

Top Speed
Vauxhall Insignia Top Speed
VED band
Vauxhall Insignia Ved
Fuel Type
Vauxhall Insignia Fuel Type
Residual Value
3 Year 60k : £8,350
4 Year 80k : £6,425
Running Cost (ppm)
3 Year 60k : 38.61
4 Year 80k : 34.89

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  • rioja999 - 11/12/2017 20:22

    I recently purchased a brand-new Insignia Grand Sport in Rioja Red. A great looking car and a great car to drive, but from day 1 there was a water leak and the carpets are soaking wet. My situation is complicated by the fact that it was not bought locally. The selling dealer say they are aware of a fault with Insignia rear quarter window leaking. My local dealer has had it for one day so far and cannot find the source of the leak. They say they need it for a week to do a full interior strip down. I have asked for a replacement but Vauxhall are saying I need to go with the strip down, which I am not happy with. What should I do?

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