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Hero HF Deluxe Flex Fuel Key Specifications
Hero HF Deluxe Flex Fuel Variants & Prices
| Variant Details | Ex. Showroom Price | |
|---|---|---|
STD97.2 cc | ₹ 72,792* |
STD
Hero HF Deluxe Flex Fuel Overview
The HF Deluxe Flex Fuel takes Hero's most accessible commuter into ethanol territory without changing what makes it work. The 97.2cc engine carries over with a revised ECU, new fuel pump, and secondary fuel filter, enabling compatibility with any blend from E20 to E85. On E85, output rises to 8.56 PS and 8.3 Nm.
The semi-digital cluster with a digital fuel gauge is the only interior change. Visually, the black and lime yellow paint is the sole differentiator from the standard bike.
Engine, Performance and Mileage
Engine, Performance and Mileage
Both the HF Deluxe and Splendor Plus Flex Fuel share the same 97.2cc air-cooled, single-cylinder engine at their core, but the internals have been meaningfully reworked. Hero revised the ECU calibration and upgraded the fuel system components to handle ethanol concentrations from E20 all the way up to E85.
On E85, peak output rises to 8.56 PS at 8,000 rpm and 8.3 Nm at 6,000 rpm. The standard HF Deluxe produces 8.02 PS and 8.05 Nm, so the gains are 0.54 PS and 0.25 Nm respectively.
That might sound marginal, but it matters for how the engine responds under load. Ethanol has a higher octane rating than petrol and burns cooler, which allows the ECU to advance ignition timing more aggressively without risk of knock.
The result is slightly sharper throttle response in the low-to-mid range, which is exactly where a 100cc commuter spends most of its life in city traffic. The 4-speed constant mesh gearbox and multiplate wet clutch carry over unchanged.
This is where flex fuel gets complicated, and Hero hasn't published separate ARAI-certified figures for the flex fuel variant yet. The standard HF Deluxe is rated at 68 kmpl by ARAI and 70 kmpl by ARAI on some variants. On E85
safety
safety
Safety equipment is identical to the top-end standard HF Deluxe: drum brakes front and rear (130 mm each) with Hero's Integrated Braking System (IBS). IBS distributes braking force across both wheels when the rear brake is applied. Side-stand engine cut-off, engine cut-off at fall, and hazard warning indicator are all present.
No disc brake or CBS upgrade here; this stays squarely within the spec sheet of the commuter segment.
pricing and features
pricing and features
The most meaningful addition on the feature front is the semi-digital instrument cluster. T
he standard HF Deluxe uses a fully analogue console, including an analogue fuel gauge. The Flex Fuel version gets a digital fuel gauge within an otherwise analogue speedometer pod. Everything else carries over, including i3S idle start-stop, side-stand engine cut-off, engine cut-off at fall, LED headlamp with HIPL, and a USB charging port.
Hero HF Deluxe Flex Fuel Specifications & Features
Engine & Transmission
| Motor Power | 8.5 PS @ 8000 rpm kW |
| Starting | Kick and Self Start |
| Engine Type | Air Cooled, 4-stroke, Single Cylinder, OHC |
| Displacement | 97.2 cc |
| Max Torque | 8.3 Nm @ 6000 rpm |
| Cooling System | Air Cooled |
| Fuel Supply | Fuel Injection |
| Gear Box | 4 Speed |
| Bore | 50 mm |
| Stroke | 49.5 mm |
| Emission Type | BS6.2 |
| Clutch | Multiplate Wet Type |
| Valve Per Cylinder | 2 |
Motor & Battery
| Drive Type | Chain Drive |
| Battery Type | Lead Acid |
| Battery Capacity | NaN kWh |
| Transmission | Manual |
Features
| Instrument Console | Analogue and Digital |
| Speedometer | Analogue |
| Seat Type | Single |
| Odometer | Analogue |
| Body Graphics | |
| Bluetooth Connectivity |
Underpinnings
| Suspension Front | Telescopic Hydraulic Shock absorber |
| Suspension Rear | 5 Step adjustable Hydraulic Shock absorber |
| Tyre Size | Front :-80/100-18, Rear :-80/100-18 |
| Wheel Size | Front :-457.2 mm,Rear :-457.2 mm |
| Wheels Type | Alloy |
| Frame | Tubular double cradle |
| Tyre Type | Tubeless |
Hero HF Deluxe Flex Fuel FAQs
How is the HF Deluxe Flex Fuel different from the regular HF Deluxe?
−Three actual differences. First, the engine: same 97.2cc unit but with a revised ECU, a new fuel pump, and a secondary fuel filter to handle ethanol up to E85. On E85 this pushes output to 8.56 PS and 8.3 Nm, versus 8.02 PS and 8.05 Nm on the standard bike. Second, the instrument cluster: the Flex Fuel gets a semi-digital unit with a digital fuel gauge; the regular HF Deluxe has a fully analogue cluster. Third, the colour: the Flex Fuel comes only in black with lime yellow graphics at launch. Everything else, chassis, brakes, suspension, features, dimensions, is carried over unchanged.
Will running high ethanol content damage my engine?
+No, not on the Flex Fuel variant. Hero has engineered the fuel system specifically for this, with ethanol-compatible fuel lines, seals, a new fuel pump, and a secondary fuel filter. The ECU is recalibrated to handle the full E20-to-E85 range.
What is the warranty on the HF Deluxe Flex Fuel?
+Hero covers all its motorcycles under a standard warranty of 5 years or 70,000 km, whichever comes first. The Flex Fuel variant falls under the same Hero MotoCorp warranty policy. Per Hero's warranty terms, damage from use of fuel not recommended by Hero is excluded from coverage, so always use fuel within the E20-to-E85 range specified for this bike.
When does the HF Deluxe Flex Fuel go on sale?
+Deliveries begin July 2026, initially in Delhi and select regions of Maharashtra. A nationwide rollout follows after that.
What does maintenance look like on the HF Deluxe Flex Fuel compared to the regular one?
+Hero's standard service interval applies: paid service every 3,000 km or 90 days from the previous service, whichever comes first, at an authorised Hero service centre. Hero hasn't announced a separate, stricter schedule for the flex fuel variant. That said, ethanol is more hygroscopic than petrol, meaning it attracts moisture, which can affect the fuel system over time if the bike sits unused. Hero's own general guidance already recommends running the engine for 60 seconds weekly if the bike is parked for long periods.
Which should I buy: regular HF Deluxe or the Flex Fuel?
+The price difference is just ₹172, which is negligible. If E85 is available near you now or is likely to be soon (Delhi and Maharashtra are the first markets), the Flex Fuel makes more sense purely for the option value, and the semi-digital cluster is a small but real upgrade. If you're in a city where E85 availability is unclear, you still lose nothing by buying the Flex Fuel since it runs perfectly on E20.
Will the regular HF Deluxe still be available?
+Yes. Hero has not announced a discontinuation of the standard HF Deluxe lineup. Both variants are expected to be sold alongside each other. The Flex Fuel is an addition to the range, not a replacement.
