K25B Suzuki K25B

Сучасний 4-циліндровий атмосферний двигун з високою ефективністю та надійністю.

Brand: Suzuki Type: Petrol Configuration: Inline-4 Production Years: 2015 - теперішній час Production: Hamamatsu, Japan
31 Brand engines
6 Modifications

Technical Specifications

Engine Displacement 2.5 L (2,494 cc)
Configuration Inline-4
Number of Cylinders 4
Valves per Cylinder 4
Power 168 - 185 л.с.
Torque 235 - 250 Н*м
Cylinder Bore 89.00 mm
Piston Stroke 100.00 mm
Compression Ratio 10.0:1
Firing Order 1-3-4-2
Fuel System Multi-point Fuel Injection
Aspiration Naturally Aspirated
Intercooler No
Maximum RPM 6,000 rpm
Max Torque RPM 4,000 rpm
Valve Train DOHC
Timing Drive Chain
Timing Chain Replacement 200000 or as needed
Block Material Aluminum
Head Material Aluminum
Engine Weight 150 kg
Dimensions (L×W×H) 600 × 500 × 700 mm
Lubrication System Wet sump
Cooling System Liquid cooling

Additional Information

Engine Family Suzuki K engine series
Manufacturing Plant Hamamatsu, Japan

Maintenance

Engine Oil Capacity 5 L (with filter: 5.5 L)
Recommended Viscosity 5W-30
Oil Standard API SN
Recommended Brands Mobil 1, Castrol, Shell
Oil Change Interval 10 000 km or 12 mo
Oil Filter 16510-65F00
Air Filter 13780-65F00
Replace every 30 000 km
Spark Plugs Type: Iridium
Part number: 14115-65F00
Gap: 1.1 mm
Quantity: 4 pcs
Replace every 60 000 km
Coolant Capacity 6 L
Coolant Type G12 (Suzuki Coolant)
Coolant Change Interval 240 000 km
Thermostat Opening Temperature 90°C
Operating Temperature 90°C
Max Operating Temperature 120°C
Critical Temperature 130°C
Annual Maintenance Cost 500-800 USD

Reliability

Reliability rating: 8/10

Expected lifespan: 250 000 km

Tuning potential

Tuning potential: Medium | Max. safe power: 300 hp

Stage Power Torque Method Cost
Stage 1 200 hp 270 Nm ECU remap only
Reliability impact: Minimal 		$400
Stage 2 230 hp 300 Nm -
Required: High-flow air filter, ECU remap
Reliability impact: Low 		$1200
Stage 3 270 hp 350 Nm -
Required: Turbocharger kit, ECU remap
Reliability impact: Medium 		$3000

Popular modifications

  • ECU tune
  • Cold air intake
  • Exhaust system upgrade

Tuning limitations

  • Stock internals limit power
  • Cooling system upgrades recommended for high power

Cars with the K25B engine

This engine was fitted to 2 models

Photo Brand Model Generation Production years
No photo
 Suzuki XL7 XL7 2020 - present
No photo
 LTI TX TX (TX1) 1998 - 2010

All modifications (6)

Vehicle Generation Modification Power Gearbox Drive
Suzuki XL7 XL7 2.5L I4 169 л.с. 6-МКП 2WD 169 hp 6-МКП 2WD
Suzuki XL7 XL7 2.5L I4 169 л.с. 6-Автомат 2WD 169 hp 6-Автомат 2WD
Suzuki XL7 XL7 2.5L I4 169 л.с. 6-Автомат 4x4 169 hp 6-Автомат 4x4
Suzuki XL7 XL7 2.5L I4 169 л.с. 8-Автомат 2WD 169 hp 8-Автомат 2WD
Suzuki XL7 XL7 2.5L I4 169 л.с. 8-Автомат 4x4 169 hp 8-Автомат 4x4
LTI TX TX (TX1) 2.5L 4-циліндровий 120 к.с. 5-Автомат 2WD 120 hp 5-Автомат 2WD

Interesting Facts

  • The K25B engine features advanced fuel efficiency technologies.
  • It is used in various Suzuki models globally.

Applications

Vehicle Generation Years Power Markets
Suzuki Vitara IV 2015-present 168hp/185hp Europe, Asia, Australia

Compatible transmissions: 6-speed Manual, 6-speed Automatic

Drive types: FWD, AWD

Fuel Economy

Fuel Type Petrol 95
Octane Rating Minimum: 95 | Recommended: 98
Consumption (City) 10 L/100km
Consumption (Highway) 6.5 L/100km
Consumption (Combined) 8 L/100km
Real Consumption 9 L/100km
Fuel Tank Capacity 55 L
Range 688 km
Cost per 100 km 10-15 USD

Emissions Standards

Emission Standard Euro 6
CO₂ Emissions 180 g/km
Particulate Filter (DPF) Absent
AdBlue Not Required

Comparison with competitors

Pros

  • Good balance of power and fuel efficiency
  • Reliable and durable design

Cons

  • Limited tuning potential compared to turbocharged engines
  • Higher fuel consumption in city driving