Bobcat S510 Skid steer loaders research

Overview

The 2021 Bobcat S510 is a mid-sized radial-lift skid steer loader designed for general construction, material handling, and light-duty excavation. Powered by a Kubota V2403-MDI-E3B engine, compliant with Stage IV Interim emissions standards, it delivers 36.5 kW (49 HP). Built in the Czech Republic, this machine has shown impressive reliability over approximately 6,350 operational hours with minimal issues. The compact size and solid hydraulic system make it a great choice for tight workspaces while still providing good breakout force and lifting power.

What’s new

The 2021 model refined the hydraulic system for smoother multi-function performance, especially when lifting and turning under load. This iteration also improved cooling capacity, making it more resistant to overheating in high-temperature work environments. Another key update is the emission control system, which includes a diesel oxidation catalyst (DOC) and a diesel particulate filter (DPF)—meaning occasional regeneration cycles are necessary.

Additionally, hydraulic quick couplers were redesigned to reduce leaks and ease attachment changes. However, compared to larger Bobcat models, the S510 lacks some premium cab features like touchscreen controls or improved climate control.

Efficiency & performance

The Bobcat S510 performs exceptionally well in material loading, grading, and general utility work. Operators report minimal power lag when using the hydraulics and drive system simultaneously, making it a good option for contractors needing a balance of power and mobility. The Kubota V2403 engine provides enough torque for basic tasks but can struggle slightly with high-demand attachments like power rakes or hydraulic breakers.

Routine maintenance is straightforward, with ground-level access to filters, fluids, and routine service points. However, regeneration cycles in the DPF system require monitoring, and operators need to follow proper shutdown procedures to avoid unnecessary clogging.

Notably, at 6,000+ hours, the hydraulic lines and bushings may require closer inspection, as wear becomes noticeable—particularly in rough applications like demolition or land clearing.

In-cabin & interior features

The S510’s cab is functional but basic. Visibility is good, thanks to low-profile side screens and a well-placed rear window. However, some operators note that cab noise is higher than expected, and seat comfort could be improved for long shifts.

The joystick controls are responsive, though not as refined as in higher-end models like the S590 or S650. One improvement in the 2021 model is enhanced ventilation, keeping the cab cooler in hot climates, which is critical for Middle Eastern job sites.

Safety features

Bobcat maintains solid safety standards, including:

• Hydraulic Lockout System to prevent unintended movement.
• Seatbelt Interlock ensuring controls won’t engage unless properly seated.
• Rear Backup Alarm & Lights for enhanced job site visibility.
• ROPS/FOPS Cab Design, keeping operators protected from falling debris.

While not as tech-heavy as some competitors, the mechanical simplicity of the S510 makes it reliable and easy to troubleshoot.

In comparison

Compared to competing skid steers like the Cat 226D3 or Deere 318G, the Bobcat S510 offers a more compact footprint with a simpler, mechanical design. However, it lacks some modern comforts like auto idle, better digital diagnostics, or smoother electro-hydraulic controls seen in Caterpillar or Kubota models.

In Bobcat’s own lineup, the S590 or S650 provide better power and lifting capacity at the cost of a larger footprint and higher fuel consumption. For small to mid-size jobs, the S510 remains a solid performer.

Verdict

The 2021 Bobcat S510 earns a 4-star rating for strong reliability, simple maintenance, and maneuverability in tight job sites. It’s not the most advanced skid steer, but its mechanical durability and ease of use make it an excellent mid-range option for construction crews and rental fleets. Comfort and tech features could be better, but performance and reliability keep it competitive.