Statistical data set

Top 10 reasons for heavy goods vehicle (HGV) vehicle fails

Updated 22 April 2025

Financial year Period Testable item Percentage
2024 to 2025 Quarter 3: October to December Brake Systems and Components 6.24%
2024 to 2025 Quarter 3: October to December Condition of Tyres 3.59%
2024 to 2025 Quarter 3: October to December Suspension 3.09%
2024 to 2025 Quarter 3: October to December Glass and View of the Road 2.76%
2024 to 2025 Quarter 3: October to December Lamps 2.52%
2024 to 2025 Quarter 3: October to December Steering 2.13%
2024 to 2025 Quarter 3: October to December Condition of Chassis 1.97%
2024 to 2025 Quarter 3: October to December Service Brake Performance 1.92%
2024 to 2025 Quarter 3: October to December Oil Leaks 1.66%
2024 to 2025 Quarter 3: October to December Oil and Waste Leaks 1.55%
2024 to 2025 Quarter 2: July to September Brake Systems and Components 5.65%
2024 to 2025 Quarter 2: July to September Condition of Tyres 3.48%
2024 to 2025 Quarter 2: July to September Suspension 2.83%
2024 to 2025 Quarter 2: July to September Oil and Waste Leaks 2.77%
2024 to 2025 Quarter 2: July to September Glass and View of the Road 2.55%
2024 to 2025 Quarter 2: July to September Lamps 2.43%
2024 to 2025 Quarter 2: July to September Steering 1.83%
2024 to 2025 Quarter 2: July to September Condition of Chassis 1.83%
2024 to 2025 Quarter 2: July to September Service Brake Performance 1.83%
2024 to 2025 Quarter 2: July to September Parking Brake Performance 1.35%
2024 to 2025 Quarter 1: April to June Brake Systems and Components 6.02%
2024 to 2025 Quarter 1: April to June Condition of Tyres 3.93%
2024 to 2025 Quarter 1: April to June Oil and Waste Leaks 3.00%
2024 to 2025 Quarter 1: April to June Suspension 2.99%
2024 to 2025 Quarter 1: April to June Lamps 2.69%
2024 to 2025 Quarter 1: April to June Glass and View of the Road 2.51%
2024 to 2025 Quarter 1: April to June Service Brake Performance 2.16%
2024 to 2025 Quarter 1: April to June Steering 1.98%
2024 to 2025 Quarter 1: April to June Condition of Chassis 1.96%
2024 to 2025 Quarter 1: April to June Parking Brake Performance 1.49%
2023 to 2024 Quarter 4: January to March Brake Systems and Components 5.70%
2023 to 2024 Quarter 4: January to March Condition of Tyres 3.65%
2023 to 2024 Quarter 4: January to March Suspension 2.89%
2023 to 2024 Quarter 4: January to March Oil and Waste Leaks 2.60%
2023 to 2024 Quarter 4: January to March Lamps 2.59%
2023 to 2024 Quarter 4: January to March Service Brake Performance 2.29%
2023 to 2024 Quarter 4: January to March Glass and View of the Road 2.25%
2023 to 2024 Quarter 4: January to March Steering 1.93%
2023 to 2024 Quarter 4: January to March Condition of Chassis 1.74%
2023 to 2024 Quarter 4: January to March Parking Brake Performance 1.49%
2023 to 2024 Quarter 3: October to December Brake Systems and Components 3.68%
2023 to 2024 Quarter 3: October to December Lamps 2.86%
2023 to 2024 Quarter 3: October to December Aim of Headlamps 2.18%
2023 to 2024 Quarter 3: October to December Steering 1.42%
2023 to 2024 Quarter 3: October to December Service Brake Performance 1.29%
2023 to 2024 Quarter 3: October to December Suspension 1.11%
2023 to 2024 Quarter 3: October to December Condition of Tyres 1.09%
2023 to 2024 Quarter 3: October to December Markers and Reflectors 0.87%
2023 to 2024 Quarter 3: October to December Parking Brake Performance 0.76%
2023 to 2024 Quarter 3: October to December Electrical Wiring and Equipment 0.76%
2023 to 2024 Quarter 2: July to September Brake Systems and Components 3.16%
2023 to 2024 Quarter 2: July to September Lamps 2.73%
2023 to 2024 Quarter 2: July to September Aim of Headlamps 2.01%
2023 to 2024 Quarter 2: July to September Steering 1.21%
2023 to 2024 Quarter 2: July to September Service Brake Performance 1.14%
2023 to 2024 Quarter 2: July to September Condition of Tyres 1.01%
2023 to 2024 Quarter 2: July to September Suspension 0.92%
2023 to 2024 Quarter 2: July to September Markers and Reflectors 0.77%
2023 to 2024 Quarter 2: July to September Seat Belts & Supplementary Restraint Systems 0.61%
2023 to 2024 Quarter 2: July to September Parking Brake Performance 0.60%
2023 to 2024 Quarter 1: April to June Brake Systems and Components 3.65%
2023 to 2024 Quarter 1: April to June Lamps 3.20%
2023 to 2024 Quarter 1: April to June Aim of Headlamps 2.28%
2023 to 2024 Quarter 1: April to June Steering 1.54%
2023 to 2024 Quarter 1: April to June Service Brake Performance 1.31%
2023 to 2024 Quarter 1: April to June Condition of Tyres 1.22%
2023 to 2024 Quarter 1: April to June Suspension 1.06%
2023 to 2024 Quarter 1: April to June Markers and Reflectors 0.83%
2023 to 2024 Quarter 1: April to June Parking Brake Performance 0.73%
2023 to 2024 Quarter 1: April to June Electrical Wiring and Equipment 0.72%
2022 to 2023 Quarter 4: January to March Lamps 2.54%
2022 to 2023 Quarter 4: January to March Brake Systems and Components 2.35%
2022 to 2023 Quarter 4: January to March Aim of Headlamps 2.19%
2022 to 2023 Quarter 4: January to March Service Brake Performance 1.33%
2022 to 2023 Quarter 4: January to March Steering 1.24%
2022 to 2023 Quarter 4: January to March Suspension 1.06%
2022 to 2023 Quarter 4: January to March Condition of Tyres 0.92%
2022 to 2023 Quarter 4: January to March Parking Brake Performance 0.69%
2022 to 2023 Quarter 4: January to March Speedometer/tachograph 0.59%
2022 to 2023 Quarter 4: January to March Exhaust Emissions 0.58%
2022 to 2023 Quarter 3: October to December Aim of Headlamps 2.42%
2022 to 2023 Quarter 3: October to December Lamps 2.14%
2022 to 2023 Quarter 3: October to December Brake Systems and Components 1.83%
2022 to 2023 Quarter 3: October to December Service Brake Performance 1.27%
2022 to 2023 Quarter 3: October to December Steering 1.19%
2022 to 2023 Quarter 3: October to December Suspension 1.07%
2022 to 2023 Quarter 3: October to December Condition of Tyres 0.75%
2022 to 2023 Quarter 3: October to December Parking Brake Performance 0.65%
2022 to 2023 Quarter 3: October to December Exhaust Emissions 0.62%
2022 to 2023 Quarter 3: October to December Speedometer/Tachograph 0.59%
2022 to 2023 Quarter 2: July to September Aim of Headlamps 2.12%
2022 to 2023 Quarter 2: July to September Lamps 1.87%
2022 to 2023 Quarter 2: July to September Brake Systems and Components 1.43%
2022 to 2023 Quarter 2: July to September Service Brake Performance 1.10%
2022 to 2023 Quarter 2: July to September Steering 0.98%
2022 to 2023 Quarter 2: July to September Suspension 0.86%
2022 to 2023 Quarter 2: July to September Condition of Tyres 0.73%
2022 to 2023 Quarter 2: July to September Parking Brake Performance 0.60%
2022 to 2023 Quarter 2: July to September Exhaust Emissions 0.50%
2022 to 2023 Quarter 2: July to September Speedometer/Tachograph 0.49%
2022 to 2023 Quarter 1: April to June Aim of Headlamps 2.43%
2022 to 2023 Quarter 1: April to June Lamps 2.43%
2022 to 2023 Quarter 1: April to June Brake Systems and Components 1.87%
2022 to 2023 Quarter 1: April to June Service Brake Performance 1.42%
2022 to 2023 Quarter 1: April to June Steering 1.25%
2022 to 2023 Quarter 1: April to June Suspension 1.02%
2022 to 2023 Quarter 1: April to June Condition of Tyres 0.92%
2022 to 2023 Quarter 1: April to June Parking Brake Performance 0.74%
2022 to 2023 Quarter 1: April to June Exhaust Emissions 0.64%
2022 to 2023 Quarter 1: April to June Speedometer/Tachograph 0.59%
2021 to 2022 Quarter 4: January to March Condition of Tyres 5.57%
2021 to 2022 Quarter 4: January to March Brake Systems and Components 4.95%
2021 to 2022 Quarter 4: January to March Oil Leaks 3.65%
2021 to 2022 Quarter 4: January to March Suspension 3.44%
2021 to 2022 Quarter 4: January to March Steering 3.36%
2021 to 2022 Quarter 4: January to March Lamps 3.22%
2021 to 2022 Quarter 4: January to March Aim of Headlamps 2.93%
2021 to 2022 Quarter 4: January to March Glass and View of the Road 2.61%
2021 to 2022 Quarter 4: January to March Service Brake Performance 1.92%
2021 to 2022 Quarter 4: January to March Condition of Chassis 1.41%
2021 to 2022 Quarter 3: October to December Brake Systems and Components 3.92%
2021 to 2022 Quarter 3: October to December Aim of Headlamps 3.86%
2021 to 2022 Quarter 3: October to December Condition of Tyres 3.58%
2021 to 2022 Quarter 3: October to December Lamps 3.41%
2021 to 2022 Quarter 3: October to December Suspension 2.67%
2021 to 2022 Quarter 3: October to December Steering 2.43%
2021 to 2022 Quarter 3: October to December Service Brake Performance 1.88%
2021 to 2022 Quarter 3: October to December Oil Leaks 1.56%
2021 to 2022 Quarter 3: October to December Parking Brake Performance 0.99%
2021 to 2022 Quarter 3: October to December Exhaust Systems 0.98%
2021 to 2022 Quarter 2: July to September Condition of Tyres 3.41%
2021 to 2022 Quarter 2: July to September Headlamp Aim 3.01%
2021 to 2022 Quarter 2: July to September Brake System Components 2.81%
2021 to 2022 Quarter 2: July to September Lamps 2.74%
2021 to 2022 Quarter 2: July to September Suspension 1.89%
2021 to 2022 Quarter 2: July to September Steering Mechanism 1.77%
2021 to 2022 Quarter 2: July to September Service Brake Performance 1.61%
2021 to 2022 Quarter 2: July to September Oil Leaks 1.11%
2021 to 2022 Quarter 2: July to September Exhaust Emmsions 0.77%
2021 to 2022 Quarter 2: July to September Parking Brake Performance 0.80%
2021 to 2022 Quarter 1: April to June Condition of Tyres 8.52%
2021 to 2022 Quarter 1: April to June Lamps 3.93%
2021 to 2022 Quarter 1: April to June Aim of Headlamps 3.55%
2021 to 2022 Quarter 1: April to June Brake Systems and Components 3.53%
2021 to 2022 Quarter 1: April to June Suspension 2.34%
2021 to 2022 Quarter 1: April to June Steering 2.17%
2021 to 2022 Quarter 1: April to June Service Brake Performance 2.03%
2021 to 2022 Quarter 1: April to June Oil Leaks 1.28%
2021 to 2022 Quarter 1: April to June Parking Brake Performance 0.99%
2021 to 2022 Quarter 1: April to June Exhaust Emmsions 0.88%
2020 to 2021 Quarter 4: January to March Condition of Tyres 7.48%
2020 to 2021 Quarter 4: January to March Lamps 3.97%
2020 to 2021 Quarter 4: January to March Brake Systems and Components 3.76%
2020 to 2021 Quarter 4: January to March Aim of Headlamps 3.71%
2020 to 2021 Quarter 4: January to March Suspension 2.52%
2020 to 2021 Quarter 4: January to March Service Brake Performance 2.47%
2020 to 2021 Quarter 4: January to March Steering 2.25%
2020 to 2021 Quarter 4: January to March Oil Leaks 1.17%
2020 to 2021 Quarter 4: January to March Parking Brake Performance 1.13%
2020 to 2021 Quarter 4: January to March Exhaust Emissions 1.06%
2020 to 2021 Quarter 3: October to December Brake Systems and Components 4.27%
2020 to 2021 Quarter 3: October to December Aim of Headlamps 3.96%
2020 to 2021 Quarter 3: October to December Lamps 3.68%
2020 to 2021 Quarter 3: October to December Steering 2.62%
2020 to 2021 Quarter 3: October to December Suspension 2.59%
2020 to 2021 Quarter 3: October to December Condition of Tyres 2.38%
2020 to 2021 Quarter 3: October to December Service Brake Performance 2.20%
2020 to 2021 Quarter 3: October to December Oil Leaks 1.30%
2020 to 2021 Quarter 3: October to December Exhaust Emissions 1.16%
2020 to 2021 Quarter 3: October to December Exhaust Systems 1.05%
2020 to 2021 Quarter 2: July to September Aim of Headlamps 3.63%
2020 to 2021 Quarter 2: July to September Brake Systems and Components 3.27%
2020 to 2021 Quarter 2: July to September Lamps 3.09%
2020 to 2021 Quarter 2: July to September Suspension 2.16%
2020 to 2021 Quarter 2: July to September Steering 1.95%
2020 to 2021 Quarter 2: July to September Service Brake Performance 1.79%
2020 to 2021 Quarter 2: July to September Condition of Tyres 1.76%
2020 to 2021 Quarter 2: July to September Oil Leaks 1.01%
2020 to 2021 Quarter 2: July to September Exhaust Emissions 0.89%
2020 to 2021 Quarter 2: July to September Parking Brake Performance 0.87%
2020 to 2021 Quarter 1: April to June Lamps 4.66%
2020 to 2021 Quarter 1: April to June Brake Systems and Components 3.67%
2020 to 2021 Quarter 1: April to June Service Brake Performance 2.58%
2020 to 2021 Quarter 1: April to June Suspension 2.28%
2020 to 2021 Quarter 1: April to June Condition of Tyres 2.08%
2020 to 2021 Quarter 1: April to June Aim of Headlamps 1.88%
2020 to 2021 Quarter 1: April to June Steering 1.59%
2020 to 2021 Quarter 1: April to June Oil Leaks 1.59%
2020 to 2021 Quarter 1: April to June Fuel Tanks and System 1.09%
2020 to 2021 Quarter 1: April to June Exhaust Systems 0.99%
2019 to 2020 Quarter 4: January to March Lamps 3.20%
2019 to 2020 Quarter 4: January to March Brake Systems and Components 3.20%
2019 to 2020 Quarter 4: January to March Aim of Headlamps 3.10%
2019 to 2020 Quarter 4: January to March Steering 2.00%
2019 to 2020 Quarter 4: January to March Suspension 2.00%
2019 to 2020 Quarter 4: January to March Service Brake Performance 1.80%
2019 to 2020 Quarter 4: January to March Condition of Tyres 1.60%
2019 to 2020 Quarter 4: January to March Oil Leaks 1.10%
2019 to 2020 Quarter 4: January to March Parking Brake Performance 0.90%
2019 to 2020 Quarter 4: January to March Exhaust Emissions 0.90%
2019 to 2020 Quarter 3: October to December Lamps 2.80%
2019 to 2020 Quarter 3: October to December Headlamp Aim 3.00%
2019 to 2020 Quarter 3: October to December Brake Systems Components 2.50%
2019 to 2020 Quarter 3: October to December Service Brake Performance 1.60%
2019 to 2020 Quarter 3: October to December Steering Mechanism 1.50%
2019 to 2020 Quarter 3: October to December Suspension 1.30%
2019 to 2020 Quarter 3: October to December Parking Brake Performance 0.70%
2019 to 2020 Quarter 3: October to December Speedo/Tacho 0.80%
2019 to 2020 Quarter 3: October to December Tyre condition 0.80%
2019 to 2020 Quarter 3: October to December Exhaust Emissions 0.80%
2019 to 2020 Quarter 2: July to September Lamps 3.10%
2019 to 2020 Quarter 2: July to September Headlamp Aim 3.00%
2019 to 2020 Quarter 2: July to September Brake System Components 2.40%
2019 to 2020 Quarter 2: July to September Service Brake Performance 1.70%
2019 to 2020 Quarter 2: July to September Steering Mechanism 1.50%
2019 to 2020 Quarter 2: July to September Suspension 1.30%
2019 to 2020 Quarter 2: July to September Parking Brake Performance 0.80%
2019 to 2020 Quarter 2: July to September Speedo/Tacho 0.70%
2019 to 2020 Quarter 2: July to September Tyre condition 0.80%
2019 to 2020 Quarter 2: July to September Exhaust Emmsions 0.90%
2019 to 2020 Quarter 1: April to June Lamps 3.20%
2019 to 2020 Quarter 1: April to June Headlamp Aim 3.00%
2019 to 2020 Quarter 1: April to June Brake System Components 2.40%
2019 to 2020 Quarter 1: April to June Service Brake Performance 1.70%
2019 to 2020 Quarter 1: April to June Steering Mechanism 1.50%
2019 to 2020 Quarter 1: April to June Exhaust Emmsions 0.90%
2019 to 2020 Quarter 1: April to June Parking Brake Performance Not set
2019 to 2020 Quarter 1: April to June Exhaust Emmsions 0.90%
2019 to 2020 Quarter 1: April to June Tyre condition 0.80%
2019 to 2020 Quarter 1: April to June Exhaust Emmsions 0.90%
2019 to 2020 Quarter 1: April to June Wiring Not set
2019 to 2020 Quarter 1: April to June Hazard Warning 0.60%
2018 to 2019 Total Lamps 3.50%
2018 to 2019 Total Headlamp Aim 3.40%
2018 to 2019 Total Brake System Components 2.90%
2018 to 2019 Total Service Brake Performance 2.20%
2018 to 2019 Total Steering Mechanism 1.80%
2018 to 2019 Total Suspension 1.50%
2018 to 2019 Total Parking Brake Performance 1.00%
2018 to 2019 Total Speedo/Tacho 0.80%
2018 to 2019 Total Tyre Condition 0.80%
2018 to 2019 Total Exhaust Emission 0.80%
2018 to 2019 Total Wiring Not set
2018 to 2019 Total Hazard Warning Not set
2017 to 2018 Total Lamps 3.80%
2017 to 2018 Total Headlamp Aim 3.60%
2017 to 2018 Total Brake System Components 3.20%
2017 to 2018 Total Service Brake Performance 2.30%
2017 to 2018 Total Steering Mechanism 2.00%
2017 to 2018 Total Suspension 1.60%
2017 to 2018 Total Parking Brake Performance 1.00%
2017 to 2018 Total Speedo/Tacho 0.90%
2017 to 2018 Total Tyre Condition Not set
2017 to 2018 Total Exhaust Emission Not set
2017 to 2018 Total Wiring 0.90%
2017 to 2018 Total Hazard Warning 0.80%
2016 to 2017 Total Lamps 3.80%
2016 to 2017 Total Headlamp Aim 4.00%
2016 to 2017 Total Brake System Components 3.20%
2016 to 2017 Total Service Brake Performance 2.30%
2016 to 2017 Total Steering Mechanism 1.90%
2016 to 2017 Total Suspension 1.60%
2016 to 2017 Total Parking Brake Performance 1.10%
2016 to 2017 Total Speedo/Tacho 0.90%
2016 to 2017 Total Tyre Condition Not set
2016 to 2017 Total Exhaust Emission Not set
2016 to 2017 Total Wiring 1.00%
2016 to 2017 Total Hazard Warning 0.80%
2015 to 2016 Total Headlamp Aim 4.80%
2015 to 2016 Total Lamps 3.80%
2015 to 2016 Total Brake System Components 3.30%
2015 to 2016 Total Service Brake Performance 2.50%
2015 to 2016 Total Steering Mechanism 1.90%
2015 to 2016 Total Suspension 1.60%
2015 to 2016 Total Secondary Brake Performance 1.40%
2015 to 2016 Total Parking Brake Performance 1.20%
2015 to 2016 Total Speedo/Tacho 1.00%
2015 to 2016 Total Wiring 1.00%
2014 to 2015 Total Headlamp Aim 7.30%
2014 to 2015 Total Lamps 4.10%
2014 to 2015 Total Brake System Components 3.60%
2014 to 2015 Total Service Brake Performance 2.90%
2014 to 2015 Total Steering Mechanism 2.10%
2014 to 2015 Total Suspension 1.70%
2014 to 2015 Total Secondary Brake Performance 1.90%
2014 to 2015 Total Parking Brake Performance 1.40%
2014 to 2015 Total Speedo/Tacho 1.20%
2014 to 2015 Total Wiring 1.00%
2013 to 2014 Total Headlamp Aim 8.10%
2013 to 2014 Total Lamps 4.40%
2013 to 2014 Total Brake System Components 3.70%
2013 to 2014 Total Service Brake Performance 3.30%
2013 to 2014 Total Steering Mechanism 2.50%
2013 to 2014 Total Suspension 1.70%
2013 to 2014 Total Secondary Brake Performance 2.30%
2013 to 2014 Total Parking Brake Performance 1.40%
2013 to 2014 Total Speedo/Tacho 1.30%
2013 to 2014 Total Wiring 1.10%