Our verdict
The domestic-spec version of the G21. Same engine and same essential mowing performance, with a lighter body that suits estate owners who do not need commercial-grade frame stiffness. On the used market the LD/HD distinction barely affects price, condition matters far more.
Pros & cons
Pros
- Same D722 diesel as the HD, lower-spec body for domestic use
- Lighter than the HD on softer ground
- Cheapest route to a Kubota diesel ride-on
- Mid-mount mower deck with side discharge
Cons
- LD body is less rugged for heavy commercial use
- Discontinued, dealer stocks are thin
- Same heavyweight footprint as any G-series
Full specs
| Type | Ride-on |
|---|---|
| Cut width | 122 cm |
| Engine / Power | Kubota D722 diesel 3-cylinder |
| Weight | 440 kg |
| Deck | Steel |
| Self-propelled | Yes |
| Rear roller | No |
| Mulching | Yes |
| Cutting heights | 6 positions |
| Bag capacity | 500 L |
| Suited to lawn | Large |
| Noise level | 100 dB |
Buying second-hand
£4000-8500 used. Hours and service stamps dictate price more than LD vs HD. Confirm the rear PTO is operational, some LD units never had the optional PTO fitted from new. Check the brake pedal feel, soft pedal often means master cylinder rebuild.
Where to buy the Kubota G21-II LD
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Repair-cost reference
UK 2026 ballpark prices for the parts you're most likely to need on this mower. OEM is dealer-genuine; aftermarket is what you'll find on eBay or generic small-engine suppliers. Use these to sense-check any quote and to negotiate on used buys.
| Part / job | OEM | Aftermarket |
|---|---|---|
|
Replacement 122cm blade
Annual sharpening is free; replace when bent or cracked.
|
£24–£32 | £8–£12 |
|
Oil filter
|
£15 | £8 |
|
Fuel filter
|
£25 | £12 |
|
Air filter element
|
£35 | £18 |
|
Deck spindle bearing
Replace if blade vibrates or the deck whines under load.
|
£48 each | £22 each |
|
Transaxle service (gear oil change)
Hydrostatic units need fresh fluid every 200 hours.
|
£60 dealer | £15 DIY |
|
12V starter battery
Generic 12V 18Ah lawn-tractor battery — fits most ride-ons.
|
£45 | £28 |
Fair-offer calculator
Tell us about a specific used listing for the Kubota G21-II LD you're looking at. We'll compute a fair offer range from our used-market data and the condition signals you provide.
Calculations are guidance, not gospel. Used-market prices vary by region (Scotland is typically 10–15% cheaper than the South-East), season (October cheapest, March most expensive), and seller motivation.
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