KTM 390 Duke vs Bajaj CNG Bike
Prices ex-showroom Delhi, checked 2026-09. On-road and running costs estimated for Delhi.
KTM 390 Duke and Bajaj CNG Bike are both sports bikes and turn up together on most shortlists. The 390 Duke costs ₹1,79,676 more than the CNG Bike, so the question is whether what it adds is worth roughly 172% extra.
The CNG Bike takes 4 of the 7 categories we score, so this is close and comes down to what you weight. Our overall ratings are 8/10 for the 390 Duke and 6.5/10 for the CNG Bike.
Category by category
Price
CNG Bike
The CNG Bike starts ₹1,79,676 lower (₹1,04,237 against ₹2,83,913), about ₹5,690 a month less on a standard loan.
Running cost
CNG Bike
CNG Bike claims 91 kmpl against 28 kmpl. That is roughly ₹22,407 a year in fuel at 30 km a day.
Performance
390 Duke
390 Duke has the better power-to-weight ratio: 243 against 62 bhp per tonne. It will feel quicker with a pillion and on overtakes.
Safety kit
390 Duke
390 Duke adds dual-channel abs, front disc brake and rear disc brake and more that the CNG Bike does not have on any variant.
Features
390 Duke
390 Duke gets usd front forks, slipper clutch, colour tft console and bluetooth connectivity and 3 more items.
City manners
CNG Bike
CNG Bike is 19.30000000000001 kg lighter and taller in the seat (825 mm), which you feel in traffic and when parking.
Warranty
CNG Bike
CNG Bike comes with 5 years of standard warranty against 2 on the 390 Duke.
Which one should you buy?
Buy the 390 Duke if
- you ride two-up or on highways and want the stronger engine
- dual-channel ABS is non-negotiable for you
- your priority is daily riding with weekend performance
- your priority is riders upgrading from a 250cc bike
Buy the CNG Bike if
- you want the lower purchase price and EMI
- mileage matters more to you than outright performance
- you are a new rider or shorter and want the lighter bike
- a longer standard warranty gives you peace of mind
What each really costs
Base variants, Delhi, 30 km a day. Servicing and insurance are class-typical estimates.
| Cost | 390 Duke | CNG Bike |
|---|---|---|
| Ex-showroom | ₹2,83,913 | ₹1,04,237 |
| On-road, Delhi | ₹3,20,200 | ₹1,19,400 |
| Fuel, 5 years | ₹1,61,330 | ₹49,295 |
| Servicing, 5 years | ₹30,000 | ₹30,000 |
| Insurance renewals | ₹15,368 | ₹5,732 |
| Five-year total | ₹5,26,898 | ₹2,04,427 |
Full specification comparison
Better figure in each row is shown in green.
| Spec | KTM390 Duke | BajajCNG Bike |
|---|---|---|
| Price | ||
| Starting ex-showroom | ₹2,83,913 | ₹1,04,237 |
| Rough EMI / month | ₹9,000 | ₹3,310 |
| Engine | ||
| Engine | 349.3 cc | 125 cc |
| Engine type | 1 Cylinder, Liquid Cooled, 4 Valves | 1 Cylinder, Air Cooled, 2 Valves |
| Power | 40.9 bhp | 9.3 bhp |
| Torque | 33.5 Nm | 9.7 Nm |
| Claimed mileage | 28 kmpl | 91 kmpl |
| Cooling | Liquid-cooled | Air-cooled |
| Transmission | 6 Speed | 5 Speed |
| Electric | ||
| Top speed | 160 km/h | 93 km/h |
| Dimensions | ||
| Kerb weight | 168.3 kg | 149 kg |
| Fuel tank | 15 L | — |
| Seat height | 800 mm | 825 mm |
| Ground clearance | 183 mm | 170 mm |
| Wheelbase | 1354 mm | 1340 mm |
| Brakes & suspension | ||
| Front brake | Disc, 320 mm, 4 piston caliper | Drum, 130 mm |
| Rear brake | Disc, 240 mm, 2 piston caliper | Drum, 130 mm |
| ABS / CBS | Supermoto ABS | CBS |
| Front suspension | Adj (5 step Damping) - Inverted telescopic fork, 43mm dia (open cartridge) | Telescopic Fork |
| Rear suspension | Adj (5 step Damping ) - Mono shox - 10 steps (prelaod Adj) | Monoshock Absorber |
| Tyres | ||
| Front tyre | 110/70-17 | 90/80-17 |
| Rear tyre | 150/60-17 | 120/70-16 |
390 Duke vs CNG Bike: questions people ask
- Which is cheaper, the 390 Duke or the CNG Bike?
- The CNG Bike is cheaper by ₹1,79,676 at the base variant (₹1,04,237 against ₹2,83,913 ex-showroom Delhi).
- Which gives better mileage, the 390 Duke or the CNG Bike?
- The CNG Bike claims 91 kmpl against 28 kmpl. Real-world figures for both will be lower.
- What is the on-road price difference between the 390 Duke and CNG Bike in Delhi?
- About ₹2,00,800: roughly ₹3,20,200 for the 390 Duke and ₹1,19,400 for the CNG Bike, base variants, including road tax, registration and insurance.
- Which costs less to own over five years?
- Our estimate for five years at 30 km a day in Delhi is ₹5,26,898 for the 390 Duke and ₹2,04,427 for the CNG Bike, including purchase, fuel, servicing and insurance renewals. The CNG Bike comes out ₹3,22,471 ahead.
