Keeping HGVs on the road has never been more expensive for UK haulage operators. With new HGV registrations dropping by 10% last year, companies are keeping their trucks on the road for longer. But running an older fleet in today’s economic climate is a significant gamble. Between inflation, driver shortages, and rising maintenance bills, fleet managers are under intense pressure to keep vehicles moving without putting further pressure on profitability.
At Warranty Solutions Group (WSG), we don’t just track these industry trends—we see the real-world impact every day through our work with dealers and fleet operators. The data from our claims department shows exactly why keeping a fleet roadworthy has never been more expensive.
What WSG Claims Data Shows
Routine HGV repairs are becoming significantly more expensive. Across the eight major HGV manufacturers, the average repair claim handled by WSG now stands at £1,765, and bills over £2,000 are now a regular occurrence.
£12,000+
Biggest repair cost recorded
12%
Of all claims are NOx sensor related
£1,765
Average repair cost in 2025
When advanced electronics and engine components fail, the numbers get much worse:
- NOx Sensors: These are a constant drain on fleet profitability, accounting for over 12% of all our HGV warranty claims, with an average repair cost of £704.
- ECU Failures: An electronic control unit issue now averages more than £2,500 per incident.
- Turbochargers: Average repair bills are creeping close to £3,000.
- Brake Pressure Valves: These are averaging over £3,200 per fix.
- Major Engine Failures: Serious engine and turbocharger breakdowns frequently exceed £9,000, with our highest recorded claims topping £12,000.
Why Repair Costs Are Increasing
By reviewing our daily claims and working closely with commercial workshops, we have identified three straightforward reasons why maintenance bills are skyrocketing:
The Issue | The Impact on Your Fleet |
Parts & Supply Chain Inflation | Manufacturers are facing higher energy, production, and logistics costs. These increases get passed straight down to the operator, making standard replacement parts much more expensive than they were a few years ago. |
Technician Shortages | Modern trucks require specialist diagnostic skills to handle complex emissions and safety systems. Because demand for these technicians heavily outstrips supply, garage labour rates are rising and vehicles are sitting idle for longer, waiting for a slot. |
When Small Faults Become Major Repairs | Modern HGV systems are highly interconnected. If a driver ignores a minor sensor fault or a small cooling issue, it can quickly trigger secondary damage across connected systems. This turns a quick, cheap fix into a catastrophic workshop bill. |
The True Cost of Downtime: The workshop invoice is only part of the cost. When you factor in lost utilisation, missed delivery slots, and the price of hiring a temporary replacement vehicle, the downtime often costs significantly more than the physical repair.
How Operators Can Reduce Risk
You cannot control inflation or the nationwide shortage of mechanics, but you can change how you protect your business from sudden expenses.
- Act on Early Warning Signs: Use telematics, service histories, and diagnostic data to catch minor component glitches before they cause severe secondary damage to the vehicle.
- Make Maintenance Costs Predictable: Instead of paying for expensive, unexpected breakdowns out of pocket, partnering with WSG for warranty protection allows you to transfer that risk. A sudden £9,000 engine failure becomes a managed, fixed cost, protecting your profit margins.
Vehicle technology will keep changing, and supply chain pressures are here to stay. But waiting for a truck to break down before you act is a losing strategy. At WSG, we help operators use real-world claims intelligence to identify recurring failure patterns, reduce downtime, and make better maintenance decisions before small faults become expensive failures.
Frequently Asked Questions
Why are fleet operators keeping trucks for longer?
A tough economic backdrop caused new HGV registrations to fall by 10% in 2025. To avoid major capital outlays, many haulage companies are extending their vehicle replacement cycles and running older assets.
What are the most common parts causing warranty claims?
Emissions and electronic components dominate our claims data. NOx sensors are the single most frequent issue, making up over 12% of all HGV claims. ECUs, turbochargers, and brake pressure valves are also major contributors to high repair bills.
How does a minor fault cause secondary damage?
Because modern HGVs rely on interconnected digital and mechanical systems, a failure in one small part (like a sensor) can cause a chain reaction. If not caught early, it can damage surrounding components, significantly increasing the final parts and labour bill.
