Cover - USD ($) $ in Millions	12 Months Ended
	Oct. 03, 2020	Jan. 27, 2021	Mar. 28, 2020
Cover [Abstract]
Document Type	10-K/A
Amendment Flag	true
Amendment Description	Amendment No. 1
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Oct. 03, 2020
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2020
Current Fiscal Year End Date	--10-03
Entity File Number	0-02382
Entity Registrant Name	MTS SYSTEMS CORPORATION
Entity Central Index Key	0000068709
Entity Tax Identification Number	41-0908057
Entity Incorporation, State or Country Code	MN
Entity Address, Address Line One	14000 Technology Drive
Entity Address, City or Town	Eden Prairie
Entity Address, State or Province	MN
Entity Address, Postal Zip Code	55344
City Area Code	(952)
Local Phone Number	937-4000
Title of 12(b) Security	Common Stock, $0.25 par value
Trading Symbol	MTSC
Name of each exchange on which registered	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 400.0
Entity Common Stock, Shares Outstanding		19,474,695.082
ICFR Auditor Attestation Flag	true