How can I tell whether a Nissan 350Z is an HR?

A raised bonnet is the quickest exterior clue for a 350Z HR, but confirm the VIN, engine code and specification before buying parts or a car. Registration dates can overlap around model changes, and adverts are not always labelled consistently.

Is a 350Z HR better than a DE?

An HR gives you the later redesigned engine, but it is not automatically the better used car. A documented, sound DE is a better purchase than a neglected HR. Choose the engine you want only after history, condition and inspection meet the same standard.

Is a 350Z RevUp a DE or an HR?

A 350Z RevUp is a higher-revving version of the VQ35DE, not an HR. In this UK comparison it sits between the 276 bhp early DE and 308 bhp HR, with 296 bhp. Confirm the exact engine because advertised year ranges overlap.

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Ownership1 August 20266 min read

350Z DE or HR is an engine question, not a verdict

Two covered engine stands under separate workshop lights in a dark garage — Two engine families. Three useful UK-market groupings.

In short

Early DE, RevUp and HR are three useful UK groupings, but registration dates can overlap around changes.
The raised bonnet is a quick HR clue. VIN, engine code and specification are firmer evidence.
An HR is not automatically the better used car. Condition, history and an inspection still decide the individual example.

DE and HR are useful labels until they become a ranking. They tell you which engine family sits in the car. They do not tell you whether its oil was checked, its invoices are genuine or its underside is sound.

What is the difference between a 350Z DE and HR?

The HR is a substantially revised later engine, not a software update to the DE. The UK run is easiest to read as early DE, higher-revving RevUp DE and HR. Confirm the exact car because dates around the changes overlap.

Both engine families are 3.5-litre V6 units in Nissan’s VQ35 line. The shared name is why a short advert can make them look more alike than Nissan’s engineering material does.

How do the DE, RevUp and HR compare?

The early DE is listed here at 276 bhp, the RevUp DE at 296 bhp and the HR at 308 bhp. Those UK groupings help identify a car, but they are not a condition report or a promise about how one will drive.

UK-market groupings used by this journal
Version	Approximate years	Engine	Power
Early car	2003 to 2005	VQ35DE 3.5 V6	276 bhp
RevUp	2005 or 2006 to 2007	VQ35DE RevUp 3.5 V6	296 bhp
HR	2007 to 2009	VQ35HR 3.5 V6	308 bhp

Nissan’s technical paper describes longer connecting rods, revised valve timing, reduced friction and symmetrical intake and exhaust layouts for the HR. Its 7,500 rpm limit is a useful factual difference. It is not permission to skip the service history.

How can you identify a 350Z HR?

Use the raised bonnet as a visual clue, then confirm the VIN, engine code and factory specification. Do not settle a purchase or parts order from the registration year alone.

Before you view oneWhich 350Z is it?

Engine: VQ35HR 3.5 V6
Power: 308 bhp

A substantially revised engine with a 7,500 rpm limit. The raised bonnet is the quickest exterior clue, but the VIN and engine code settle the identification.

Checks for this version

On a manual car, make sure the clutch pedal returns consistently and ask whether the internal concentric slave cylinder has been replaced. A 2007 Nissan campaign covered specified cars, not every 350Z.
Let the car reach operating temperature and confirm both cooling fans work. Investigate overheating or unstable temperature before buying.
Check that modifications are declared, documented and fitted properly. Compare the car with its invoices rather than treating a parts list as proof of good maintenance.
Inspect the sills, rear arches, underside and suspension mounting areas for corrosion or poor repairs.

Choose the HR if you specifically want its revised engine and can find a well-kept example. The badge does not outweigh condition, history or an independent inspection.

Bought one? Put its registration on a print in the colour it actually is.

Should you choose a 350Z DE or HR?

Choose the HR if you specifically want the redesigned engine and find a sound example. Otherwise buy the best documented and independently inspected car. Version preference should narrow a search, not excuse faults.

The full 350Z buyer’s guidecovers cold and warm checks, oil evidence, gearbox, clutch hydraulics, cooling, tyres, corrosion and modifications. It also explains why the HR manual’s internal clutch slave cylinder should not be projected onto every earlier car.

Which sources support this comparison?

Nissan’s own Z history and VQ35HR technical paper support the production and engine distinctions. The catalogue supplies only the signed-off 2008 HR poster figures. Neither source can establish the condition of a used car.

Read Nissan’s 50-year Z history and VQ35HR technical paper. Use the official MOT history service and vehicle recall service for the car in front of you.

Questions people actually ask

What is the difference between a 350Z DE and HR?: The DE and HR are different versions of Nissan's 3.5-litre VQ35 V6. The later HR was substantially redesigned, revs to 7,500 rpm and is listed at 308 bhp in the UK grouping used here. A higher-revving RevUp DE sits between the early DE and HR.
How can I tell whether a Nissan 350Z is an HR?: A raised bonnet is the quickest exterior clue for a 350Z HR, but confirm the VIN, engine code and specification before buying parts or a car. Registration dates can overlap around model changes, and adverts are not always labelled consistently.
Is a 350Z HR better than a DE?: An HR gives you the later redesigned engine, but it is not automatically the better used car. A documented, sound DE is a better purchase than a neglected HR. Choose the engine you want only after history, condition and inspection meet the same standard.
Is a 350Z RevUp a DE or an HR?: A 350Z RevUp is a higher-revving version of the VQ35DE, not an HR. In this UK comparison it sits between the 276 bhp early DE and 308 bhp HR, with 296 bhp. Confirm the exact engine because advertised year ranges overlap.

Written by Jonathan in Derby. Last updated 1 August 2026.