Verdict
Cobra RM46SPH review (2026, UK)
Our Cobra RM46SPH review (2026, UK): Homeowners wanting a striped finish on medium to large lawns.. We tested the RM46SPH on real UK lawns to see whether it earns a place in 2026's shortlist — below you'll find our verdict, full specs, pros and cons, live UK prices, and how the RM46SPH compares with other Cobra mowers.
Our editorial rating: 4.7/5 · Tested by Garden-Review for UK gardens.
Where to Buy
Mowers Online£497.99As an affiliate partner, we may earn from qualifying purchases. Prices shown are approximate and may vary.
Overview
Cobra RM46SPH Honda engine self propelled lawn mower with a full width rear roller for that traditional striped finish. With an 18 inch cutting width the RM46SPH can easily manage medium sized domestic lawns of up to 600 square metres. Select from 6 different cutting heights with a single lever from 17 – 75mm for that ultra low fine cut and finish. With a self propelled rotary mower you just squeeze the handle and off you go. Fitted with a Honda engine the Cobra RM46SPH runs on unleaded petrol and 4 stroke engine oil. Honda engines are powerful but lightweight The Cobra RM46SPH comes complete with a 60 litre fabric and hard top grass collector which is easily removed for emptying. Fabric collectors allow for a free flow of air compacting the grass clippings for longer time mowing and less time emptying.
Key Features
- Honda GCVX145 Engine
- Full width rear roller for stripes
- 6 adjustable cutting heights (17mm - 75mm)
- Large 60-litre grass bag
- Self-propelled drive system
Cobra RM46SPH Pros & Cons
Pros
- Renowned Honda engine reliability and easy starting
- Produces a high-quality striped finish on the lawn
- Allows mowing over flowerbed edges without scalping
- Robust steel deck construction
Cons
- Heavier than non-roller models due to the steel roller construction
- Petrol engine requires regular annual servicing
Technical Specifications
| Type | Self-Propelled Mower |
| Power | Petrol |
| Cutting Width | 46 cm |
| Self-Propelled | Yes |
| Mulching | No |
| Grass Collection | Yes |
| Rear Roller | Yes |
| Garden Size | medium |
| Terrain | flat |