C172 pilot reported an off field landing due to an engine seizing possibly caused by fuel exhaustion...

Attributes
ACN	1520081
Time
Date	201802
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Route In Use	None
Flight Plan	None
Component
Aircraft Component	Engine
Person 1
Function	Single Pilot
Qualification	Flight Crew Commercial Flight Crew Instrument
Experience	Flight Crew Last 90 Days 117 Flight Crew Total 1097 Flight Crew Type 994
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy Inflight Event / Encounter Fuel Issue

Narrative:

While finishing a flight aircraft suffered an engine failure; possibly due to fuel starvation. The aircraft was filled with 6.5 hours of fuel and the failure happened with 35-40 mins of fuel remaining. The aircraft landed safely in a grass field with no injuries or damage to the aircraft. What I have learned from this incident is that it is always smart to add an additional margin of safety in regards to fuel reserves.

Original NASA ASRS Text

Title: C172 pilot reported an off field landing due to an engine seizing possibly caused by fuel exhaustion.

Narrative: While finishing a flight aircraft suffered an engine failure; possibly due to fuel starvation. The aircraft was filled with 6.5 hours of fuel and the failure happened with 35-40 mins of fuel remaining. The aircraft landed safely in a grass field with no injuries or damage to the aircraft. What I have learned from this incident is that it is always smart to add an additional margin of safety in regards to fuel reserves.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.