Our verdict
For estate owners and professional groundsmen. The Kubota G23 is what cricket-club groundsmen and head gardeners actually run on. Diesel engine outlasts the rest of the machine; properly maintained these run 30 years.
Pros & cons
Pros
- Diesel engine — 30+ year service life realistic
- 137cm deck for proper estate work
- 550L collection bag
- Used by professional groundsmen and golf clubs
Cons
- Eye-watering price
- Diesel maintenance routine matters
- Heavy at 500kg — needs serious storage
Full specs
| Type | Ride-on |
|---|---|
| Cut width | 137 cm |
| Engine / Power | Kubota D722 diesel 3-cylinder |
| Weight | 500 kg |
| Deck | Steel |
| Self-propelled | Yes |
| Rear roller | No |
| Mulching | Yes |
| Cutting heights | 6 positions |
| Bag capacity | 550 L |
| Suited to lawn | Large |
| Noise level | 100 dB |
Buying second-hand
£5500–9000 used. Kubota diesel hours: under 1500 is excellent for a G23, under 3000 acceptable. Diesel injectors need clean fuel — ask about service history. Hydraulic system pressure test should be part of any pre-purchase inspection on a unit over £7000.
Where to buy the Kubota G23-II HD
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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 137cm 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 G23-II HD 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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