Vauxhall Insignia Grand Sport 1.6 Diesel Review

The Vauxhall Insignia Grand Sport equipped with the 1.6-liter diesel engine stands out as a practical choice in the competitive family saloon segment. This model combines impressive fuel efficiency, comfortable long-distance cruising, and competitive pricing, making it particularly appealing for fleet operators and private buyers seeking value without compromise.

Engine Performance and Efficiency Breakdown

At the heart of this Insignia is the 1.6-liter ecoTEC diesel engine, delivering reliable power for everyday use. It produces around 136 horsepower and 320 Nm of torque, enabling a 0-62 mph sprint in just over 10 seconds. While not the quickest in its class, the engine’s strong low-end torque ensures effortless acceleration on motorways and quick overtakes feel assured.

Fuel economy is a highlight, with official figures reaching up to 70.6 mpg in combined testing. Real-world motorway runs have yielded around 37 mpg over extended distances, proving its frugality for high-mileage drivers. CO2 emissions sit at a low 105-114 g/km, translating to a favorable 23% company car tax band—better than some petrol variants but trailing ultra-efficient rivals like the Skoda Superb Greenline.

• Power Output: 136 hp, 320 Nm torque
• 0-62 mph: 10.9 seconds
• Top Speed: Approximately 130 mph
• Fuel Economy: 70.6 mpg (claimed), 33-37 mpg real-world
• CO2 Emissions: 105-114 g/km

The six-speed manual gearbox is long-geared for optimal efficiency, though it can feel sluggish in top gear during spirited driving. An optional eight-speed automatic is available on higher trims but adds weight and emissions, potentially increasing running costs.

Dynamic Capabilities on Road and Track

Handling in the Insignia Grand Sport benefits from a lighter chassis—up to 175 kg less than its predecessor—thanks to advanced high-strength steel construction. The suspension setup is soft yet composed, excelling at absorbing urban potholes and providing a plush ride on faster A-roads.

Steering is well-weighted, offering good feedback without being overly heavy, which enhances confidence during lane changes or roundabouts. Body lean is minimal even without adaptive dampers, and higher-spec models with all-wheel drive add torque vectoring for sharper cornering. Wind and road noise are effectively suppressed, creating a serene cabin ideal for long hauls.

Compared to class leaders like the Volkswagen Passat or Skoda Superb, the Insignia doesn’t quite match their supreme refinement but offers better value and lighter weight for nimble responses.

Interior Comfort and Practicality Explored

Inside, the cabin has grown with a longer wheelbase providing generous rear legroom—a major upgrade over the previous generation. Five adults can travel comfortably, and headroom is ample even for taller passengers. Materials feel a step up, with soft-touch surfaces on higher trims blending into a modern dashboard layout.

The infotainment system features an 8-inch touchscreen with intuitive navigation, Apple CarPlay, and Android Auto. Practical touches include a shelf below the screen for phone support and ample storage cubbies. Boot space measures 490 liters with seats up, expanding to 1,450 liters when folded, sufficient for family holidays or work gear.

• Front legroom and headroom: Class-leading
• Rear space: Improved by 92 mm wheelbase stretch
• Boot capacity: 490-1,450 liters
• Infotainment: Responsive, smartphone integration

Standard Kit and Safety Features

Entry-level trims like Tech Line come loaded with essentials: dual-zone climate control, cruise control, rear parking sensors, and LED headlights. Mid-range Design or Elite Nav adds sat-nav, wireless charging, and advanced driver aids like lane keep assist and autonomous emergency braking. Safety ratings are strong, with five-star Euro NCAP scores across the board.

For company car users, the low list price—starting around £21,525 P11D—combined with high residuals (35.2%) keeps whole-life costs down, potentially saving thousands over rivals.

Running Costs and Ownership Verdict

Whole-life expenses are a strong suit, with insiders noting savings of up to £5,691 over four years versus predecessors. Fuel costs over a typical year might total £5,077, bolstered by the efficient diesel. Warranty is standard three years/100,000 miles, with service intervals at 20,000 miles.

In a market shifting toward electrification, this diesel remains relevant for its balance of performance and economy, especially where diesel infrastructure persists.

Pros and Cons at a Glance

• Pros: Exceptional fuel economy, comfortable ride, spacious interior, low company car tax, value pricing
• Cons: Sixth gear feels tall for overtakes, not the most refined in class, automatic option less efficient

Who Should Buy the Insignia 1.6 Diesel?

Fleet managers prioritizing low BIK tax and high mpg will find it ideal. Families needing a versatile saloon for long trips appreciate the space and quietness. Enthusiasts might prefer punchier GSi variants, but for 80% of buyers, this engine hits the sweet spot.

Frequently Asked Questions (FAQs)

Is the Vauxhall Insignia 1.6 diesel reliable?

Yes, it benefits from Vauxhall’s proven ecoTEC diesel tech, with strong real-world durability reported in fleet use.

How does it compare to the petrol version?

The diesel offers better economy and torque for cruising, though the petrol is smoother and quicker off the line.

What’s the boot space like?

490 liters standard, expanding significantly—great for practicality.

Is it suitable for company cars?

Absolutely, with 105 g/km CO2 and low list prices making it a top fleet pick.

Any handling upgrades?

Lighter chassis and optional adaptive dampers improve agility over the old model.